{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://schema.humancellatlas.org/module/project/5.2.3/publication",
  "description": "Information about a journal article, book, web page, or other external available documentation for a project.",
  "additionalProperties": false,
  "required": [
    "authors",
    "publication_title"
  ],
  "title": "publication",
  "type": "object",
  "properties": {
    "describedBy": {
      "description": "The URL reference to the schema.",
      "type": "string",
      "pattern": "^(http|https)://schema.(.*?)humancellatlas.org/module/project/(([0-9]{1,}.[0-9]{1,}.[0-9]{1,})|([a-zA-Z]*?))/publication"
    },
    "schema_version": {
      "description": "The version number of the schema in major.minor.patch format.",
      "type": "string",
      "pattern": "^[0-9]{1,}.[0-9]{1,}.[0-9]{1,}$",
      "example": "4.6.1"
    },
    "authors": {
      "description": "A list of authors associated with the publication in 'surname initials' format.",
      "type": "array",
      "example": "Doe JD",
      "items": {
        "type": "string"
      },
      "user_friendly": "Authors"
    },
    "publication_title": {
      "description": "The title of the publication.",
      "type": "string",
      "user_friendly": "Publication title",
      "example": "Study of single cells in the human body"
    },
    "doi": {
      "description": "The publication digital object identifier (doi).",
      "type": "string",
      "example": "10.1016/j.cell.2016.07.054",
      "user_friendly": "Publication DOI"
    },
    "pmid": {
      "description": "The PubMed ID of the publication.",
      "type": "integer",
      "example": "27565351",
      "user_friendly": "Publication PMID"
    },
    "publication_url": {
      "description": "A URL, preferably not behind a paywall, for the publication.",
      "type": "string",
      "user_friendly": "Publication URL"
    }
  }
}