{
  "$schema": "https://json-structure.org/meta/extended/v0/#",
  "$id": "https://api-evangelist.github.io/web-of-science-apis/json-structure/web-of-science-document-identifiers-structure.json",
  "title": "DocumentIdentifiers",
  "description": "Document identifiers (DOI, PMID, etc.)",
  "type": "object",
  "properties": {
    "doi": {
      "type": "str",
      "description": "Digital Object Identifier"
    },
    "pmid": {
      "type": "str",
      "description": "PubMed identifier"
    },
    "issn": {
      "type": "str",
      "description": "ISSN of the source journal"
    },
    "eissn": {
      "type": "str",
      "description": "Electronic ISSN of the source journal"
    }
  }
}