OpenCitations (established in 2010) [1][2] is a project aiming to publish open bibliographic citation information in RDF.

The datasets can be accessed via SPARQL, a REST API, as dumps on Figshare, as individual bibliographic entities, or using OSCAR (OpenCitations RDF Search Application) or Lucinda (The OpenCitations RDF Resource Browser).

[5] The OpenCitations Corpus (OCC) is an open repository of scholarly citation data.

The repository is released under the CC0 public domain to ensure that the scholarly citation data is open to all.

[8] The Open Biomedical Citations in Context Corpus (CCC) is a database of citations providing in-text references,[9] extending OpenCitations records with in-text reference pointer information.