_Type: One of `{ gold, green, hybrid, bronze }`• Cardinality: ONE_
Subclass of [BestAccessRight](#bestaccessright), indicates information about rights held in and over the resource and the open Access Route.
### openAccessRoute
Indicates the OpenAccess status. Values are set according to the [Unpaywall methodology](https://support.unpaywall.org/support/solutions/articles/44001777288-what-do-the-types-of-oa-status-green-gold-hybrid-and-bronze-mean-).
## AlternateIdentifier
Type used to represent the information associated to persistent identifiers associated to the result that have not been forged by an authority for that pid type. For example we collect metadata from an institutional repository that provides as identifier for the result also the doi.
<details>
<summary>Example</summary>
```json
{
"scheme" : "doi",
"value" : "10.17182/hepdata.9959"
}
```
</details>
### scheme
_Type: String • Cardinality: ONE_
Vocabulary reference.
### value
_Type: String • Cardinality: ONE_
Value from the given scheme/vocabulary.
## APC
Indicates the money spent to make a book or article available in Open Access. Sources for this information includes the OpenAPC initiative.
<details>
<summary>Example</summary>
```json
{
"currency" : "EU",
"amount": "1000"
}
```
</details>
### currency
_Type: String • Cardinality: ONE_
The system of money in which the amount is expressed (Euro, USD, etc).
### amount
_Type: String • Cardinality: ONE_
The quantity of money.
## Author
Represents the result author.
<details>
<summary>Example</summary>
```json
{
"fullname":"Turunen, Heidi",
"name":"Heidi",
"surname":"Turunen",
"rank":1,
"pid":{
"id":{
"scheme":"orcid",
"value":"0000-0001-7169-1177"
},
"provenance":{
"provenance":"Harvested",
"trust":"0.9"
}
}
}
```
</details>
### fullname
_Type: String • Cardinality: ONE_
Author's full name.
### name
_Type: String • Cardinality: ONE_
Author's given name.
### surname
_Type: String • Cardinality: ONE_
Author's family name.
### rank
_Type: String • Cardinality: ONE_
Author's order in the list of authors for the given result.
An instance is one specific materialization or version of the result. For example, you can have one result with three instances as result of deduplication:
* one is the pre-print
* one is the post-print
* one is the published version
Each instance is characterized by the properties described in the following table.
Maps [dc:rights](https://www.dublincore.org/specifications/dublin-core/dcmi-terms/elements11/rights/), describes the access rights of the web resources relative to this instance.
The set of persistent identifiers associated to this instance that have been collected from an authority for the pid type (i.e. Crossref/Datacite for doi). See [OpenAIRE_entity_identifier_and_PID_mapping_policy](https://support.openaire.eu/projects/docs/wiki/OpenAIRE_entity_identifier_and_PID_mapping_policy) for more information.
### publicationdate
_Type: String • Cardinality: ONE_
The publication date of the research product.
### refereed
_Type: String • Cardinality: ONE_
Describes if this instance has been peer-reviewed or not. Allowed values are peerReviewed, nonPeerReviewed, UNKNOWN (as defined in https://api.openaire.eu/vocabularies/dnet:review_levels). For example:
The value for the subject in the selected scheme. When the scheme is 'keyword', it means that the subject is free-text (i.e. not a term from a controlled vocabulary).
