R.7-4 Alternative metrics on the documents are provided. In most cases, this requires a DOI.

• Short Title: R.7-4 Alternative metrics on the documents are provided. In most cases, this requires a DOI.
• Source Documnent: DINI Certificate for Open Access Publication Services 2019
• Source Document Link: https://doi.org/10.18452/21759
• Publishing Organisation: DINI Working Group "Electronic Publishing"
• Date of Publication: 2020-08-21
• Topic: Interlinking/ interoperability
• Keywords: metrics, DOI, PID
• Addressed Stakeholders: data service providers
• Full Text: Crossref offers a free API for this: https://www.crossref.org/services/event-data/.