Research

References cited by a DOI

Changed on

Extract the deposited reference list (outbound citations) for a given DOI. Returned from the reference[] array of the work record - present only when the publisher has deposited references. No extra upstream call is made (the work envelope is fetched once, reshaped). Data licensed CC0 by Crossref.

get/api/v1/research/crossref/references/{doi}

Request

  • Base URL: https://sugra.ai
  • URL: https://sugra.ai/api/v1/research/crossref/references/{doi}
  • Auth: API key in header x-api-key

Path parameters

doistring required

DOI of the source work (e.g. 10.1038/nature12373). Forward slashes are preserved.

Response

Reference list deposited by the publisher, with the source DOI's indexed_date_time.

Example response

{
  "meta": {
    "endpoint": "/api/v1/fred/us/cpi",
    "data_time": "2026-04-16T14:30:00Z",
    "response_time": "2026-04-16T14:30:12Z",
    "provider": "Sugra API v1.0.1",
    "data_age_days": 8.532,
    "source": "sugra_crypto",
    "attribution": "Short interest and Reg SHO daily short volume data is owned by and sourced from FINRA (Financial Industry Regulatory Authority).",
    "fallback_chain": [
      "sugra_crypto",
      "sugra_finance"
    ],
    "stale_since": "2026-09-08T12:00:00Z",
    "period": "2026-Q1",
    "notes": "the UKMTO report behind these counts is dated 2026-08-21 and is 11 days old"
  }
}

Changes