diff --git a/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/dump/oaf/Result.java b/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/dump/oaf/Result.java
index ac1dae3827..9d625ecb59 100644
--- a/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/dump/oaf/Result.java
+++ b/dhp-schemas/src/main/java/eu/dnetlib/dhp/schema/dump/oaf/Result.java
@@ -42,8 +42,6 @@ public class Result implements Serializable {
 
 	private AccessRight bestaccessright;
 
-	private List<ExternalReference> externalReference;
-
 	private List<Instance> instance;
 
 	private Container container;// Journal
@@ -252,14 +250,6 @@ public class Result implements Serializable {
 		this.bestaccessright = bestaccessright;
 	}
 
-	public List<ExternalReference> getExternalReference() {
-		return externalReference;
-	}
-
-	public void setExternalReference(List<ExternalReference> externalReference) {
-		this.externalReference = externalReference;
-	}
-
 	public List<Instance> getInstance() {
 		return instance;
 	}
diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/ResultMapper.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/ResultMapper.java
index a25cdd7531..55afce46da 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/ResultMapper.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/dump/ResultMapper.java
@@ -328,14 +328,6 @@ public class ResultMapper implements Serializable {
 					value -> value
 						.forEach(s -> subjectList.add(getSubject(s))));
 
-			List<ExternalReference> erList = new ArrayList<>();
-			Optional
-				.ofNullable(input.getExtraInfo())
-				.ifPresent(
-					value -> value
-						.forEach(
-							er -> erList.add(ExternalReference.newInstance(er))));
-
 			out.setSubjects(subjectList);
 
 			out.setType(input.getResulttype().getClassid());