diff --git a/dhp-common/src/main/java/eu/dnetlib/dhp/schema/oaf/utils/DoiCleaningRule.java b/dhp-common/src/main/java/eu/dnetlib/dhp/schema/oaf/utils/DoiCleaningRule.java
index 1a7482685..396919462 100644
--- a/dhp-common/src/main/java/eu/dnetlib/dhp/schema/oaf/utils/DoiCleaningRule.java
+++ b/dhp-common/src/main/java/eu/dnetlib/dhp/schema/oaf/utils/DoiCleaningRule.java
@@ -1,8 +1,12 @@
 
 package eu.dnetlib.dhp.schema.oaf.utils;
 
+import org.apache.commons.lang3.StringUtils;
+
 public class DoiCleaningRule {
 
+
+
 	public static String clean(final String doi) {
 		return doi
 			.toLowerCase()
@@ -11,4 +15,27 @@ public class DoiCleaningRule {
 			.replaceFirst(CleaningFunctions.DOI_PREFIX_REGEX, CleaningFunctions.DOI_PREFIX);
 	}
 
+	public static String normalizeDoi(final  String input){
+		if (input == null)
+			return null;
+		final String replaced = input
+				.replaceAll("\\n|\\r|\\t|\\s", "")
+				.toLowerCase()
+				.replaceFirst(CleaningFunctions.DOI_PREFIX_REGEX, CleaningFunctions.DOI_PREFIX);
+		if (StringUtils.isEmpty(replaced))
+			return null;
+
+		if (!replaced.contains("10."))
+			return null;
+
+
+		final String ret = replaced.substring(replaced.indexOf("10."));
+
+		if (!ret.startsWith(CleaningFunctions.DOI_PREFIX))
+			return null;
+
+		return ret;
+
+	}
+
 }
diff --git a/dhp-workflows/dhp-aggregation/src/main/scala/eu/dnetlib/dhp/collection/crossref/Crossref2Oaf.scala b/dhp-workflows/dhp-aggregation/src/main/scala/eu/dnetlib/dhp/collection/crossref/Crossref2Oaf.scala
new file mode 100644
index 000000000..6ad28e857
--- /dev/null
+++ b/dhp-workflows/dhp-aggregation/src/main/scala/eu/dnetlib/dhp/collection/crossref/Crossref2Oaf.scala
@@ -0,0 +1,819 @@
+package eu.dnetlib.dhp.collection.crossref
+
+import eu.dnetlib.dhp.schema.common.ModelConstants
+import eu.dnetlib.dhp.schema.oaf._
+import eu.dnetlib.dhp.schema.oaf.utils.OafMapperUtils.{field, qualifier, structuredProperty, subject}
+import eu.dnetlib.dhp.schema.oaf.utils.{DoiCleaningRule, GraphCleaningFunctions, IdentifierFactory, OafMapperUtils, PidType}
+import eu.dnetlib.dhp.utils.DHPUtils
+import org.apache.commons.lang.StringUtils
+import org.json4s
+import org.json4s.DefaultFormats
+import org.json4s.JsonAST._
+import org.json4s.jackson.JsonMethods._
+import org.slf4j.{Logger, LoggerFactory}
+
+import java.time.LocalDate
+import java.time.format.DateTimeFormatter
+import java.util
+import scala.collection.JavaConverters._
+import scala.collection.mutable
+import scala.io.Source
+import scala.util.matching.Regex
+
+case class CrossrefDT(doi: String, json: String, timestamp: Long) {}
+
+case class mappingAffiliation(name: String) {}
+
+case class mappingAuthor(
+  given: Option[String],
+  family: Option[String],
+  sequence: Option[String],
+  ORCID: Option[String],
+  affiliation: Option[mappingAffiliation]
+) {}
+
+case class funderInfo(id: String, uri: String, name: String, synonym: List[String]) {}
+
+case class mappingFunder(name: String, DOI: Option[String], award: Option[List[String]]) {}
+
+case object Crossref2Oaf {
+  val logger: Logger = LoggerFactory.getLogger(Crossref2Oaf.getClass)
+
+  val irishFunder: List[funderInfo] = {
+    val s = Source
+      .fromInputStream(getClass.getResourceAsStream("/eu/dnetlib/dhp/doiboost/crossref/irish_funder.json"))
+      .mkString
+    implicit lazy val formats: DefaultFormats.type = org.json4s.DefaultFormats
+    lazy val json: org.json4s.JValue = parse(s)
+    json.extract[List[funderInfo]]
+  }
+
+  def createCrossrefCollectedFrom(): KeyValue = {
+
+    val cf = new KeyValue
+    cf.setValue("Crossref");
+    cf.setKey(ModelConstants.CROSSREF_ID)
+    cf
+
+  }
+  def generateDataInfo(): DataInfo = {
+    generateDataInfo("0.9")
+  }
+
+  def generateDataInfo(trust: String): DataInfo = {
+    val di = new DataInfo
+    di.setDeletedbyinference(false)
+    di.setInferred(false)
+    di.setInvisible(false)
+    di.setTrust(trust)
+    di.setProvenanceaction(
+      OafMapperUtils.qualifier(
+        ModelConstants.SYSIMPORT_ACTIONSET,
+        ModelConstants.SYSIMPORT_ACTIONSET,
+        ModelConstants.DNET_PROVENANCE_ACTIONS,
+        ModelConstants.DNET_PROVENANCE_ACTIONS
+      )
+    )
+    di
+  }
+  def getOpenAccessQualifier(): AccessRight = {
+
+    OafMapperUtils.accessRight(
+      ModelConstants.ACCESS_RIGHT_OPEN,
+      "Open Access",
+      ModelConstants.DNET_ACCESS_MODES,
+      ModelConstants.DNET_ACCESS_MODES
+    )
+  }
+
+  def getRestrictedQualifier(): AccessRight = {
+    OafMapperUtils.accessRight(
+      "RESTRICTED",
+      "Restricted",
+      ModelConstants.DNET_ACCESS_MODES,
+      ModelConstants.DNET_ACCESS_MODES
+    )
+  }
+  def getUnknownQualifier(): AccessRight = {
+    OafMapperUtils.accessRight(
+      ModelConstants.UNKNOWN,
+      ModelConstants.NOT_AVAILABLE,
+      ModelConstants.DNET_ACCESS_MODES,
+      ModelConstants.DNET_ACCESS_MODES
+    )
+  }
+
+  def getEmbargoedAccessQualifier(): AccessRight = {
+    OafMapperUtils.accessRight(
+      "EMBARGO",
+      "Embargo",
+      ModelConstants.DNET_ACCESS_MODES,
+      ModelConstants.DNET_ACCESS_MODES
+    )
+  }
+
+  def getClosedAccessQualifier(): AccessRight = {
+    OafMapperUtils.accessRight(
+      "CLOSED",
+      "Closed Access",
+      ModelConstants.DNET_ACCESS_MODES,
+      ModelConstants.DNET_ACCESS_MODES
+    )
+  }
+
+  def decideAccessRight(lic: Field[String], date: String): AccessRight = {
+    if (lic == null) {
+      //Default value Unknown
+      return getUnknownQualifier()
+    }
+    val license: String = lic.getValue
+    //CC licenses
+    if (
+      license.startsWith("cc") ||
+        license.startsWith("http://creativecommons.org/licenses") ||
+        license.startsWith("https://creativecommons.org/licenses") ||
+
+        //ACS Publications Author choice licenses (considered OPEN also by Unpaywall)
+        license.equals("http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html") ||
+        license.equals("http://pubs.acs.org/page/policy/authorchoice_termsofuse.html") ||
+        license.equals("http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html") ||
+
+        //APA (considered OPEN also by Unpaywall)
+        license.equals("http://www.apa.org/pubs/journals/resources/open-access.aspx")
+    ) {
+
+      val oaq: AccessRight = getOpenAccessQualifier()
+      oaq.setOpenAccessRoute(OpenAccessRoute.hybrid)
+      return oaq
+    }
+
+    //OUP (BUT ONLY AFTER 12 MONTHS FROM THE PUBLICATION DATE, OTHERWISE THEY ARE EMBARGOED)
+    if (
+      license.equals(
+        "https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model"
+      )
+    ) {
+      val now = java.time.LocalDate.now
+
+      try {
+        val pub_date = LocalDate.parse(date, DateTimeFormatter.ofPattern("yyyy-MM-dd"))
+        if (((now.toEpochDay - pub_date.toEpochDay) / 365.0) > 1) {
+          val oaq: AccessRight = getOpenAccessQualifier()
+          oaq.setOpenAccessRoute(OpenAccessRoute.hybrid)
+          return oaq
+        } else {
+          return getEmbargoedAccessQualifier()
+        }
+      } catch {
+        case e: Exception => {
+          try {
+            val pub_date =
+              LocalDate.parse(date, DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss'Z'"))
+            if (((now.toEpochDay - pub_date.toEpochDay) / 365.0) > 1) {
+              val oaq: AccessRight = getOpenAccessQualifier()
+              oaq.setOpenAccessRoute(OpenAccessRoute.hybrid)
+              return oaq
+            } else {
+              return getEmbargoedAccessQualifier()
+            }
+          } catch {
+            case ex: Exception => return getClosedAccessQualifier()
+          }
+        }
+
+      }
+
+    }
+
+    getClosedAccessQualifier()
+
+  }
+
+
+  def getIrishId(doi: String): Option[String] = {
+    val id = doi.split("/").last
+    irishFunder
+      .find(f => id.equalsIgnoreCase(f.id) || (f.synonym.nonEmpty && f.synonym.exists(s => s.equalsIgnoreCase(id))))
+      .map(f => f.id)
+  }
+
+  def mappingResult(result: Result, json: JValue, cobjCategory: String, originalType: String): Result = {
+    implicit lazy val formats: DefaultFormats.type = org.json4s.DefaultFormats
+
+    //MAPPING Crossref DOI into PID
+    val doi: String = DoiCleaningRule.normalizeDoi((json \ "DOI").extract[String])
+    result.setPid(List(structuredProperty(
+     doi,
+      qualifier(
+        PidType.doi.toString,
+        PidType.doi.toString,
+        ModelConstants.DNET_PID_TYPES,
+        ModelConstants.DNET_PID_TYPES
+      ),
+      null
+    )).asJava)
+
+    //MAPPING Crossref DOI into OriginalId
+    //and Other Original Identifier of dataset like clinical-trial-number
+    val clinicalTrialNumbers = for (JString(ctr) <- json \ "clinical-trial-number") yield ctr
+    val alternativeIds = for (JString(ids) <- json \ "alternative-id") yield ids
+    val tmp = clinicalTrialNumbers ::: alternativeIds ::: List(doi)
+
+    val originalIds = new util.ArrayList(tmp.filter(id => id != null).asJava)
+    result.setOriginalId(originalIds)
+
+    // Add DataInfo
+    result.setDataInfo(generateDataInfo())
+
+    result.setLastupdatetimestamp((json \ "indexed" \ "timestamp").extract[Long])
+    result.setDateofcollection((json \ "indexed" \ "date-time").extract[String])
+
+    result.setCollectedfrom(List(createCrossrefCollectedFrom()).asJava)
+
+    // Publisher ( Name of work's publisher mapped into  Result/Publisher)
+    val publisher = (json \ "publisher").extractOrElse[String](null)
+    if (publisher != null && publisher.nonEmpty)
+      result.setPublisher(field(publisher, null))
+
+    // TITLE
+    val mainTitles =
+      for { JString(title) <- json \ "title" if title.nonEmpty } yield {
+        structuredProperty(title, ModelConstants.MAIN_TITLE_QUALIFIER, null)
+      }
+    val originalTitles = for {
+      JString(title) <- json \ "original-title" if title.nonEmpty
+    } yield structuredProperty(title, ModelConstants.ALTERNATIVE_TITLE_QUALIFIER, null)
+    val shortTitles = for {
+      JString(title) <- json \ "short-title" if title.nonEmpty
+    } yield structuredProperty(title, ModelConstants.ALTERNATIVE_TITLE_QUALIFIER, null)
+    val subtitles =
+      for { JString(title) <- json \ "subtitle" if title.nonEmpty } yield structuredProperty(
+        title,
+        ModelConstants.SUBTITLE_QUALIFIER, null)
+    result.setTitle((mainTitles ::: originalTitles ::: shortTitles ::: subtitles).asJava)
+
+    // DESCRIPTION
+    val descriptionList =
+      for { JString(description) <- json \ "abstract" } yield field[String](description, null)
+    result.setDescription(descriptionList.asJava)
+
+    // Source
+    val sourceList = for {
+      JString(source) <- json \ "source" if source != null && source.nonEmpty
+    } yield field(source, null)
+    result.setSource(sourceList.asJava)
+
+    //RELEVANT DATE Mapping
+    val createdDate = generateDate(
+      (json \ "created" \ "date-time").extract[String],
+      (json \ "created" \ "date-parts").extract[List[List[Int]]],
+      "created",
+      ModelConstants.DNET_DATACITE_DATE
+    )
+    val postedDate = generateDate(
+      (json \ "posted" \ "date-time").extractOrElse[String](null),
+      (json \ "posted" \ "date-parts").extract[List[List[Int]]],
+      "available",
+      ModelConstants.DNET_DATACITE_DATE
+    )
+    val acceptedDate = generateDate(
+      (json \ "accepted" \ "date-time").extractOrElse[String](null),
+      (json \ "accepted" \ "date-parts").extract[List[List[Int]]],
+      "accepted",
+      ModelConstants.DNET_DATACITE_DATE
+    )
+    val publishedPrintDate = generateDate(
+      (json \ "published-print" \ "date-time").extractOrElse[String](null),
+      (json \ "published-print" \ "date-parts").extract[List[List[Int]]],
+      "published-print",
+      ModelConstants.DNET_DATACITE_DATE
+    )
+    val publishedOnlineDate = generateDate(
+      (json \ "published-online" \ "date-time").extractOrElse[String](null),
+      (json \ "published-online" \ "date-parts").extract[List[List[Int]]],
+      "published-online",
+      ModelConstants.DNET_DATACITE_DATE
+    )
+
+    val issuedDate = extractDate(
+      (json \ "issued" \ "date-time").extractOrElse[String](null),
+      (json \ "issued" \ "date-parts").extract[List[List[Int]]]
+    )
+    if (StringUtils.isNotBlank(issuedDate)) {
+      result.setDateofacceptance(field(issuedDate,null))
+    } else {
+      result.setDateofacceptance(field(createdDate.getValue,null))
+    }
+    result.setRelevantdate(
+      List(createdDate, postedDate, acceptedDate, publishedOnlineDate, publishedPrintDate)
+        .filter(p => p != null)
+        .asJava
+    )
+
+    //Mapping Subject
+    val subjectList: List[String] = (json \ "subject").extractOrElse[List[String]](List())
+
+    if (subjectList.nonEmpty) {
+      result.setSubject(
+        subjectList.map(s => subject(s,ModelConstants.SUBTITLE_QUALIFIER,null)).asJava
+      )
+    }
+
+    //Mapping Author
+    val authorList: List[mappingAuthor] =
+      (json \ "author").extract[List[mappingAuthor]].filter(a => a.family.isDefined)
+
+    val sorted_list = authorList.sortWith((a: mappingAuthor, b: mappingAuthor) =>
+      a.sequence.isDefined && a.sequence.get.equalsIgnoreCase("first")
+    )
+
+    result.setAuthor(sorted_list.zipWithIndex.map { case (a, index) =>
+      generateAuhtor(a.given.orNull, a.family.get, a.ORCID.orNull, index)
+    }.asJava)
+
+    // Mapping instance
+    val instance = new Instance()
+    val license = for {
+      JObject(license)                                    <- json \ "license"
+      JField("URL", JString(lic))                         <- license
+      JField("content-version", JString(content_version)) <- license
+    } yield (field[String](lic,null), content_version)
+    val l = license.filter(d => StringUtils.isNotBlank(d._1.getValue))
+    if (l.nonEmpty) {
+      if (l exists (d => d._2.equals("vor"))) {
+        for (d <- l) {
+          if (d._2.equals("vor")) {
+            instance.setLicense(d._1)
+          }
+        }
+      } else {
+        instance.setLicense(l.head._1)
+      }
+    }
+
+    // Ticket #6281 added pid to Instance
+    instance.setPid(result.getPid)
+
+    val has_review = json \ "relation" \ "has-review" \ "id"
+
+    if (has_review != JNothing) {
+      instance.setRefereed(
+        OafMapperUtils.qualifier(
+          "0001",
+          "peerReviewed",
+          ModelConstants.DNET_REVIEW_LEVELS,
+          ModelConstants.DNET_REVIEW_LEVELS
+        )
+      )
+    }
+
+    instance.setAccessright(
+      decideAccessRight(instance.getLicense, result.getDateofacceptance.getValue)
+    )
+    instance.setInstancetype(
+      OafMapperUtils.qualifier(
+        cobjCategory.substring(0, 4),
+        cobjCategory.substring(5),
+        ModelConstants.DNET_PUBLICATION_RESOURCE,
+        ModelConstants.DNET_PUBLICATION_RESOURCE
+      )
+    )
+    //ADD ORIGINAL TYPE to the mapping
+    val itm = new InstanceTypeMapping
+    itm.setOriginalType(originalType)
+    itm.setVocabularyName(ModelConstants.OPENAIRE_COAR_RESOURCE_TYPES_3_1)
+    instance.setInstanceTypeMapping(List(itm).asJava)
+    result.setResourcetype(
+      OafMapperUtils.qualifier(
+        cobjCategory.substring(0, 4),
+        cobjCategory.substring(5),
+        ModelConstants.DNET_PUBLICATION_RESOURCE,
+        ModelConstants.DNET_PUBLICATION_RESOURCE
+      )
+    )
+
+    instance.setCollectedfrom(createCrossrefCollectedFrom())
+    if (StringUtils.isNotBlank(issuedDate)) {
+      instance.setDateofacceptance(field(issuedDate,null))
+    } else {
+      instance.setDateofacceptance(field(createdDate.getValue,null))
+    }
+    val s: List[String] = List("https://doi.org/" + doi)
+    //    val links: List[String] = ((for {JString(url) <- json \ "link" \ "URL"} yield url) ::: List(s)).filter(p => p != null && p.toLowerCase().contains(doi.toLowerCase())).distinct
+    //    if (links.nonEmpty) {
+    //      instance.setUrl(links.asJava)
+    //    }
+    if (s.nonEmpty) {
+      instance.setUrl(s.asJava)
+    }
+
+    result.setInstance(List(instance).asJava)
+
+    //IMPORTANT
+    //The old method result.setId(generateIdentifier(result, doi))
+    //is replaced using IdentifierFactory, but the old identifier
+    //is preserved among the originalId(s)
+    val oldId = generateIdentifier(result, doi)
+    result.setId(oldId)
+
+    val newId = IdentifierFactory.createDOIBoostIdentifier(result)
+    if (!oldId.equalsIgnoreCase(newId)) {
+      result.getOriginalId.add(oldId)
+    }
+    result.setId(newId)
+
+    if (result.getId == null)
+      null
+    else
+      result
+  }
+  def generateIdentifier(oaf: Result, doi: String): String = {
+    val id = DHPUtils.md5(doi.toLowerCase)
+    s"50|doiboost____|$id"
+  }
+
+  def generateAuhtor(given: String, family: String, orcid: String, index: Int): Author = {
+    val a = new Author
+    a.setName(given)
+    a.setSurname(family)
+    a.setFullname(s"$given $family")
+    a.setRank(index + 1)
+    if (StringUtils.isNotBlank(orcid))
+      a.setPid(
+        List(
+          structuredProperty(
+            orcid,
+            qualifier( ModelConstants.ORCID_PENDING, ModelConstants.ORCID_PENDING, ModelConstants.DNET_PID_TYPES, ModelConstants.DNET_PID_TYPES),
+            generateDataInfo()
+          )
+        ).asJava
+      )
+
+    a
+  }
+
+  def convert(input: String): List[Oaf] = {
+    implicit lazy val formats: DefaultFormats.type = org.json4s.DefaultFormats
+    lazy val json: json4s.JValue = parse(input)
+
+    var resultList: List[Oaf] = List()
+
+    val objectType = (json \ "type").extractOrElse[String](null)
+    val objectSubType = (json \ "subtype").extractOrElse[String](null)
+    if (objectType == null)
+      return resultList
+
+    val result = generateItemFromType(objectType, objectSubType)
+    if (result == null)
+      return List()
+    val cOBJCategory = mappingCrossrefSubType.getOrElse(
+      objectType,
+      mappingCrossrefSubType.getOrElse(objectSubType, "0038 Other literature type")
+    )
+
+    val originalType = if (mappingCrossrefSubType.contains(objectType)) objectType else objectSubType
+    mappingResult(result, json, cOBJCategory, originalType)
+    if (result == null || result.getId == null)
+      return List()
+
+    val funderList: List[mappingFunder] =
+      (json \ "funder").extractOrElse[List[mappingFunder]](List())
+
+    if (funderList.nonEmpty) {
+      resultList = resultList ::: mappingFunderToRelations(
+        funderList,
+        result.getId,
+        createCrossrefCollectedFrom(),
+        result.getDataInfo,
+        result.getLastupdatetimestamp
+      )
+    }
+
+    result match {
+      case publication: Publication => convertPublication(publication, json, cOBJCategory)
+      case dataset: Dataset         => convertDataset(dataset)
+    }
+
+    val doisReference: List[String] = for {
+      JObject(reference_json)          <- json \ "reference"
+      JField("DOI", JString(doi_json)) <- reference_json
+    } yield doi_json
+
+    if (doisReference != null && doisReference.nonEmpty) {
+      val citation_relations: List[Relation] = generateCitationRelations(doisReference, result)
+      resultList = resultList ::: citation_relations
+    }
+    resultList = resultList ::: List(result)
+    resultList
+  }
+
+  private def createCiteRelation(source: Result, targetPid: String, targetPidType: String): List[Relation] = {
+
+    val targetId = IdentifierFactory.idFromPid("50", targetPidType, targetPid, true)
+
+    val from = new Relation
+    from.setSource(source.getId)
+    from.setTarget(targetId)
+    from.setRelType(ModelConstants.RESULT_RESULT)
+    from.setRelClass(ModelConstants.CITES)
+    from.setSubRelType(ModelConstants.CITATION)
+    from.setCollectedfrom(source.getCollectedfrom)
+    from.setDataInfo(source.getDataInfo)
+    from.setLastupdatetimestamp(source.getLastupdatetimestamp)
+
+    List(from)
+  }
+
+  def generateCitationRelations(dois: List[String], result: Result): List[Relation] = {
+    dois.flatMap(d => createCiteRelation(result, d, "doi"))
+  }
+
+  def mappingFunderToRelations(
+    funders: List[mappingFunder],
+    sourceId: String,
+    cf: KeyValue,
+    di: DataInfo,
+    ts: Long
+  ): List[Relation] = {
+
+    val queue = new mutable.Queue[Relation]
+
+    def snsfRule(award: String): String = {
+      val tmp1 = StringUtils.substringAfter(award, "_")
+      val tmp2 = StringUtils.substringBefore(tmp1, "/")
+      logger.debug(s"From $award to $tmp2")
+      tmp2
+
+    }
+
+    def extractECAward(award: String): String = {
+      val awardECRegex: Regex = "[0-9]{4,9}".r
+      if (awardECRegex.findAllIn(award).hasNext)
+        return awardECRegex.findAllIn(award).max
+      null
+    }
+
+    def generateRelation(sourceId: String, targetId: String, relClass: String): Relation = {
+
+      val r = new Relation
+      r.setSource(sourceId)
+      r.setTarget(targetId)
+      r.setRelType(ModelConstants.RESULT_PROJECT)
+      r.setRelClass(relClass)
+      r.setSubRelType(ModelConstants.OUTCOME)
+      r.setCollectedfrom(List(cf).asJava)
+      r.setDataInfo(di)
+      r.setLastupdatetimestamp(ts)
+      r
+
+    }
+
+    def generateSimpleRelationFromAward(
+      funder: mappingFunder,
+      nsPrefix: String,
+      extractField: String => String
+    ): Unit = {
+      if (funder.award.isDefined && funder.award.get.nonEmpty)
+        funder.award.get
+          .map(extractField)
+          .filter(a => a != null && a.nonEmpty)
+          .foreach(award => {
+            val targetId = getProjectId(nsPrefix, DHPUtils.md5(award))
+            queue += generateRelation(sourceId, targetId, ModelConstants.IS_PRODUCED_BY)
+            queue += generateRelation(targetId, sourceId, ModelConstants.PRODUCES)
+          })
+    }
+
+    def getProjectId(nsPrefix: String, targetId: String): String = {
+      s"40|$nsPrefix::$targetId"
+    }
+
+    if (funders != null)
+      funders.foreach(funder => {
+        if (funder.DOI.isDefined && funder.DOI.get.nonEmpty) {
+
+          if (getIrishId(funder.DOI.get).isDefined) {
+            val nsPrefix = getIrishId(funder.DOI.get).get.padTo(12, '_')
+            val targetId = getProjectId(nsPrefix, "1e5e62235d094afd01cd56e65112fc63")
+            queue += generateRelation(sourceId, targetId, ModelConstants.IS_PRODUCED_BY)
+            queue += generateRelation(targetId, sourceId, ModelConstants.PRODUCES)
+          }
+
+          funder.DOI.get match {
+            case "10.13039/100010663" | "10.13039/100010661" | "10.13039/501100007601" | "10.13039/501100000780" |
+                "10.13039/100010665" =>
+              generateSimpleRelationFromAward(funder, "corda__h2020", extractECAward)
+            case "10.13039/100011199" | "10.13039/100004431" | "10.13039/501100004963" | "10.13039/501100000780" =>
+              generateSimpleRelationFromAward(funder, "corda_______", extractECAward)
+            case "10.13039/501100000781" =>
+              generateSimpleRelationFromAward(funder, "corda_______", extractECAward)
+              generateSimpleRelationFromAward(funder, "corda__h2020", extractECAward)
+              generateSimpleRelationFromAward(funder, "corda_____he", extractECAward)
+            case "10.13039/100000001"    => generateSimpleRelationFromAward(funder, "nsf_________", a => a)
+            case "10.13039/501100001665" => generateSimpleRelationFromAward(funder, "anr_________", a => a)
+            case "10.13039/501100002341" => generateSimpleRelationFromAward(funder, "aka_________", a => a)
+            case "10.13039/501100001602" =>
+              generateSimpleRelationFromAward(funder, "sfi_________", a => a.replace("SFI", ""))
+            case "10.13039/501100000923" => generateSimpleRelationFromAward(funder, "arc_________", a => a)
+            case "10.13039/501100000038" =>
+              val targetId = getProjectId("nserc_______", "1e5e62235d094afd01cd56e65112fc63")
+              queue += generateRelation(sourceId, targetId, ModelConstants.IS_PRODUCED_BY)
+              queue += generateRelation(targetId, sourceId, ModelConstants.PRODUCES)
+            case "10.13039/501100000155" =>
+              val targetId = getProjectId("sshrc_______", "1e5e62235d094afd01cd56e65112fc63")
+              queue += generateRelation(sourceId, targetId, ModelConstants.IS_PRODUCED_BY)
+              queue += generateRelation(targetId, sourceId, ModelConstants.PRODUCES)
+            case "10.13039/501100000024" =>
+              val targetId = getProjectId("cihr________", "1e5e62235d094afd01cd56e65112fc63")
+              queue += generateRelation(sourceId, targetId, ModelConstants.IS_PRODUCED_BY)
+              queue += generateRelation(targetId, sourceId, ModelConstants.PRODUCES)
+
+            case "10.13039/100020031" =>
+              val targetId = getProjectId("tara________", "1e5e62235d094afd01cd56e65112fc63")
+              queue += generateRelation(sourceId, targetId, ModelConstants.IS_PRODUCED_BY)
+              queue += generateRelation(targetId, sourceId, ModelConstants.PRODUCES)
+
+            case "10.13039/501100005416" => generateSimpleRelationFromAward(funder, "rcn_________", a => a)
+            case "10.13039/501100002848" => generateSimpleRelationFromAward(funder, "conicytf____", a => a)
+            case "10.13039/501100003448" => generateSimpleRelationFromAward(funder, "gsrt________", extractECAward)
+            case "10.13039/501100010198" => generateSimpleRelationFromAward(funder, "sgov________", a => a)
+            case "10.13039/501100004564" => generateSimpleRelationFromAward(funder, "mestd_______", extractECAward)
+            case "10.13039/501100003407" =>
+              generateSimpleRelationFromAward(funder, "miur________", a => a)
+              val targetId = getProjectId("miur________", "1e5e62235d094afd01cd56e65112fc63")
+              queue += generateRelation(sourceId, targetId, ModelConstants.IS_PRODUCED_BY)
+              queue += generateRelation(targetId, sourceId, ModelConstants.PRODUCES)
+            case "10.13039/501100006588" | "10.13039/501100004488" =>
+              generateSimpleRelationFromAward(
+                funder,
+                "irb_hr______",
+                a => a.replaceAll("Project No.", "").replaceAll("HRZZ-", "")
+              )
+            case "10.13039/501100006769" => generateSimpleRelationFromAward(funder, "rsf_________", a => a)
+            case "10.13039/501100001711" => generateSimpleRelationFromAward(funder, "snsf________", snsfRule)
+            case "10.13039/501100004410" => generateSimpleRelationFromAward(funder, "tubitakf____", a => a)
+            case "10.13039/100004440" =>
+              generateSimpleRelationFromAward(funder, "wt__________", a => a)
+              val targetId = getProjectId("wt__________", "1e5e62235d094afd01cd56e65112fc63")
+              queue += generateRelation(sourceId, targetId, ModelConstants.IS_PRODUCED_BY)
+              queue += generateRelation(targetId, sourceId, ModelConstants.PRODUCES)
+            //ASAP
+            case "10.13039/100018231" => generateSimpleRelationFromAward(funder, "asap________", a => a)
+            //CHIST-ERA
+            case "10.13039/501100001942" =>
+              val targetId = getProjectId("chistera____", "1e5e62235d094afd01cd56e65112fc63")
+              queue += generateRelation(sourceId, targetId, ModelConstants.IS_PRODUCED_BY)
+              queue += generateRelation(targetId, sourceId, ModelConstants.PRODUCES)
+            //HE
+            case "10.13039/100018693" | "10.13039/100018694" | "10.13039/100019188" | "10.13039/100019180" |
+                "10.13039/100018695" | "10.13039/100019185" | "10.13039/100019186" | "10.13039/100019187" =>
+              generateSimpleRelationFromAward(funder, "corda_____he", extractECAward)
+            //FCT
+            case "10.13039/501100001871" =>
+              generateSimpleRelationFromAward(funder, "fct_________", a => a)
+            //NHMRC
+            case "10.13039/501100000925" =>
+              generateSimpleRelationFromAward(funder, "nhmrc_______", a => a)
+            //NIH
+            case "10.13039/100000002" =>
+              generateSimpleRelationFromAward(funder, "nih_________", a => a)
+            //NWO
+            case "10.13039/501100003246" =>
+              generateSimpleRelationFromAward(funder, "nwo_________", a => a)
+            //UKRI
+            case "10.13039/100014013" | "10.13039/501100000267" | "10.13039/501100000268" | "10.13039/501100000269" |
+                "10.13039/501100000266" | "10.13039/501100006041" | "10.13039/501100000265" | "10.13039/501100000270" |
+                "10.13039/501100013589" | "10.13039/501100000271" =>
+              generateSimpleRelationFromAward(funder, "ukri________", a => a)
+
+            case _ => logger.debug("no match for " + funder.DOI.get)
+
+          }
+
+        } else {
+          funder.name match {
+            case "European Union’s Horizon 2020 research and innovation program" =>
+              generateSimpleRelationFromAward(funder, "corda__h2020", extractECAward)
+            case "European Union's" =>
+              generateSimpleRelationFromAward(funder, "corda__h2020", extractECAward)
+              generateSimpleRelationFromAward(funder, "corda_______", extractECAward)
+              generateSimpleRelationFromAward(funder, "corda_____he", extractECAward)
+            case "The French National Research Agency (ANR)" | "The French National Research Agency" =>
+              generateSimpleRelationFromAward(funder, "anr_________", a => a)
+            case "CONICYT, Programa de Formación de Capital Humano Avanzado" =>
+              generateSimpleRelationFromAward(funder, "conicytf____", a => a)
+            case "Wellcome Trust Masters Fellowship" =>
+              generateSimpleRelationFromAward(funder, "wt__________", a => a)
+              val targetId = getProjectId("wt__________", "1e5e62235d094afd01cd56e65112fc63")
+              queue += generateRelation(sourceId, targetId, ModelConstants.IS_PRODUCED_BY)
+              queue += generateRelation(targetId, sourceId, ModelConstants.PRODUCES)
+            case _ => logger.debug("no match for " + funder.name)
+
+          }
+        }
+
+      })
+    queue.toList
+  }
+
+  def convertDataset(dataset: Dataset): Unit = {
+    // TODO check if there are other info to map into the Dataset
+  }
+
+  def convertPublication(publication: Publication, json: JValue, cobjCategory: String): Unit = {
+    implicit lazy val formats: DefaultFormats.type = org.json4s.DefaultFormats
+    val containerTitles = for { JString(ct) <- json \ "container-title" } yield ct
+
+    //Mapping book
+    if (cobjCategory.toLowerCase.contains("book")) {
+      val ISBN = for { JString(isbn) <- json \ "ISBN" } yield isbn
+      if (ISBN.nonEmpty && containerTitles.nonEmpty) {
+        val source = s"${containerTitles.head} ISBN: ${ISBN.head}"
+        if (publication.getSource != null) {
+          val l: List[Field[String]] = publication.getSource.asScala.toList
+          val ll: List[Field[String]] = l ::: List(field(source,null))
+          publication.setSource(ll.asJava)
+        } else
+          publication.setSource(List(field(source,null)).asJava)
+      }
+    } else {
+      // Mapping Journal
+
+      val issnInfos = for {
+        JArray(issn_types)           <- json \ "issn-type"
+        JObject(issn_type)           <- issn_types
+        JField("type", JString(tp))  <- issn_type
+        JField("value", JString(vl)) <- issn_type
+      } yield Tuple2(tp, vl)
+
+      val volume = (json \ "volume").extractOrElse[String](null)
+      if (containerTitles.nonEmpty) {
+        val journal = new Journal
+        journal.setName(containerTitles.head)
+        if (issnInfos.nonEmpty) {
+
+          issnInfos.foreach(tp => {
+            tp._1 match {
+              case "electronic" => journal.setIssnOnline(tp._2)
+              case "print"      => journal.setIssnPrinted(tp._2)
+            }
+          })
+        }
+        journal.setVol(volume)
+        val page = (json \ "page").extractOrElse[String](null)
+        if (page != null) {
+          val pp = page.split("-")
+          if (pp.nonEmpty)
+            journal.setSp(pp.head)
+          if (pp.size > 1)
+            journal.setEp(pp(1))
+        }
+        publication.setJournal(journal)
+      }
+    }
+  }
+
+  def extractDate(dt: String, datePart: List[List[Int]]): String = {
+    if (StringUtils.isNotBlank(dt))
+      return GraphCleaningFunctions.cleanDate(dt)
+    if (datePart != null && datePart.size == 1) {
+      val res = datePart.head
+      if (res.size == 3) {
+        val dp = f"${res.head}-${res(1)}%02d-${res(2)}%02d"
+        if (dp.length == 10) {
+          return GraphCleaningFunctions.cleanDate(dp)
+        }
+      } else if (res.size == 2) {
+        val dp = f"${res.head}-${res(1)}%02d-01"
+        return GraphCleaningFunctions.cleanDate(dp)
+      } else if (res.size == 1) {
+        return GraphCleaningFunctions.cleanDate(s"${res.head}-01-01")
+      }
+    }
+    null
+
+  }
+
+  def generateDate(
+    dt: String,
+    datePart: List[List[Int]],
+    classId: String,
+    schemeId: String
+  ): StructuredProperty = {
+    val dp = extractDate(dt, datePart)
+    if (StringUtils.isNotBlank(dp))
+      return structuredProperty(dp, qualifier(classId,classId, schemeId, schemeId),null)
+    null
+  }
+
+  def generateItemFromType(objectType: String, objectSubType: String): Result = {
+    if (mappingCrossrefType.contains(objectType)) {
+      if (mappingCrossrefType(objectType).equalsIgnoreCase("publication"))
+        return new Publication()
+      if (mappingCrossrefType(objectType).equalsIgnoreCase("dataset"))
+        return new Dataset()
+    }
+    null
+  }
+
+}
diff --git a/dhp-workflows/dhp-aggregation/src/main/scala/eu/dnetlib/dhp/collection/crossref/CrossrefDataset.scala b/dhp-workflows/dhp-aggregation/src/main/scala/eu/dnetlib/dhp/collection/crossref/CrossrefDataset.scala
new file mode 100644
index 000000000..f93acc599
--- /dev/null
+++ b/dhp-workflows/dhp-aggregation/src/main/scala/eu/dnetlib/dhp/collection/crossref/CrossrefDataset.scala
@@ -0,0 +1,106 @@
+package eu.dnetlib.dhp.collection.crossref
+
+import eu.dnetlib.dhp.application.ArgumentApplicationParser
+import org.apache.commons.io.IOUtils
+import org.apache.hadoop.io.{IntWritable, Text}
+import org.apache.spark.SparkConf
+import org.apache.spark.sql.expressions.Aggregator
+import org.apache.spark.sql.{Dataset, Encoder, SaveMode, SparkSession}
+import org.json4s
+import org.json4s.DefaultFormats
+import org.json4s.jackson.JsonMethods.parse
+import org.slf4j.{Logger, LoggerFactory}
+
+object CrossrefDataset {
+
+  val logger: Logger = LoggerFactory.getLogger(CrossrefDataset.getClass)
+
+  def to_item(input: String): CrossrefDT = {
+
+    implicit lazy val formats: DefaultFormats.type = org.json4s.DefaultFormats
+    lazy val json: json4s.JValue = parse(input)
+    val ts: Long = (json \ "indexed" \ "timestamp").extract[Long]
+    val doi: String = DoiBoostMappingUtil.normalizeDoi((json \ "DOI").extract[String])
+    CrossrefDT(doi, input, ts)
+
+  }
+
+  def main(args: Array[String]): Unit = {
+
+    val conf: SparkConf = new SparkConf()
+    val parser = new ArgumentApplicationParser(
+      IOUtils.toString(
+        CrossrefDataset.getClass.getResourceAsStream(
+          "/eu/dnetlib/dhp/doiboost/crossref_to_dataset_params.json"
+        )
+      )
+    )
+    parser.parseArgument(args)
+    val spark: SparkSession =
+      SparkSession
+        .builder()
+        .config(conf)
+        .appName(CrossrefDataset.getClass.getSimpleName)
+        .master(parser.get("master"))
+        .getOrCreate()
+    import spark.implicits._
+
+    val crossrefAggregator = new Aggregator[CrossrefDT, CrossrefDT, CrossrefDT] with Serializable {
+
+      override def zero: CrossrefDT = null
+
+      override def reduce(b: CrossrefDT, a: CrossrefDT): CrossrefDT = {
+        if (b == null)
+          return a
+        if (a == null)
+          return b
+
+        if (a.timestamp > b.timestamp) {
+          return a
+        }
+        b
+      }
+
+      override def merge(a: CrossrefDT, b: CrossrefDT): CrossrefDT = {
+        if (b == null)
+          return a
+        if (a == null)
+          return b
+
+        if (a.timestamp > b.timestamp) {
+          return a
+        }
+        b
+      }
+
+      override def bufferEncoder: Encoder[CrossrefDT] = implicitly[Encoder[CrossrefDT]]
+
+      override def outputEncoder: Encoder[CrossrefDT] = implicitly[Encoder[CrossrefDT]]
+
+      override def finish(reduction: CrossrefDT): CrossrefDT = reduction
+    }
+
+    val workingPath: String = parser.get("workingPath")
+
+    val main_ds: Dataset[CrossrefDT] = spark.read.load(s"$workingPath/crossref_ds").as[CrossrefDT]
+
+    val update =
+      spark.createDataset(
+        spark.sparkContext
+          .sequenceFile(s"$workingPath/index_update", classOf[IntWritable], classOf[Text])
+          .map(i => CrossrefImporter.decompressBlob(i._2.toString))
+          .map(i => to_item(i))
+      )
+
+    main_ds
+      .union(update)
+      .groupByKey(_.doi)
+      .agg(crossrefAggregator.toColumn)
+      .map(s => s._2)
+      .write
+      .mode(SaveMode.Overwrite)
+      .save(s"$workingPath/crossref_ds_updated")
+
+  }
+
+}
diff --git a/dhp-workflows/dhp-aggregation/src/main/scala/eu/dnetlib/dhp/collection/crossref/GenerateCrossrefDataset.scala b/dhp-workflows/dhp-aggregation/src/main/scala/eu/dnetlib/dhp/collection/crossref/GenerateCrossrefDataset.scala
new file mode 100644
index 000000000..c1deddb02
--- /dev/null
+++ b/dhp-workflows/dhp-aggregation/src/main/scala/eu/dnetlib/dhp/collection/crossref/GenerateCrossrefDataset.scala
@@ -0,0 +1,66 @@
+package eu.dnetlib.dhp.collection.crossref
+
+import eu.dnetlib.dhp.application.ArgumentApplicationParser
+import eu.dnetlib.dhp.schema.oaf.utils.DoiCleaningRule
+import org.apache.spark.rdd.RDD
+import org.apache.spark.sql.{Encoder, Encoders, SaveMode, SparkSession}
+import org.apache.spark.{SparkConf, SparkContext}
+import org.json4s
+import org.json4s.DefaultFormats
+import org.json4s.jackson.JsonMethods.parse
+import org.slf4j.{Logger, LoggerFactory}
+
+import scala.io.Source
+
+object GenerateCrossrefDataset {
+
+  val log: Logger = LoggerFactory.getLogger(GenerateCrossrefDataset.getClass)
+
+  implicit val mrEncoder: Encoder[CrossrefDT] = Encoders.kryo[CrossrefDT]
+
+  def crossrefElement(meta: String): CrossrefDT = {
+    implicit lazy val formats: DefaultFormats.type = org.json4s.DefaultFormats
+    lazy val json: json4s.JValue = parse(meta)
+    val doi: String = DoiCleaningRule.normalizeDoi((json \ "DOI").extract[String])
+    val timestamp: Long = (json \ "indexed" \ "timestamp").extract[Long]
+    CrossrefDT(doi, meta, timestamp)
+
+  }
+
+  def main(args: Array[String]): Unit = {
+    val conf = new SparkConf
+    val parser = new ArgumentApplicationParser(
+      Source
+        .fromInputStream(
+          getClass.getResourceAsStream(
+            "/eu/dnetlib/dhp/doiboost/crossref_dump_reader/generate_dataset_params.json"
+          )
+        )
+        .mkString
+    )
+    parser.parseArgument(args)
+    val master = parser.get("master")
+    val sourcePath = parser.get("sourcePath")
+    val targetPath = parser.get("targetPath")
+
+    val spark: SparkSession = SparkSession
+      .builder()
+      .config(conf)
+      .appName(GenerateCrossrefDataset.getClass.getSimpleName)
+      .master(master)
+      .getOrCreate()
+    val sc: SparkContext = spark.sparkContext
+
+    import spark.implicits._
+
+    val tmp: RDD[String] = sc.textFile(sourcePath, 6000)
+
+    spark
+      .createDataset(tmp)
+      .map(entry => crossrefElement(entry))
+      .write
+      .mode(SaveMode.Overwrite)
+      .save(targetPath)
+      }
+
+}