Crossref open citations

This text file contains citations between documents classified as journal article, book content, conference paper, or preprint in Crossref. Each line in the file contains the DOI of a citing document followed by the DOI of a cited document. There are 110,851,607 documents classified as journal article, book content, conference paper, or preprint in Crossref. There are 1,080,268,294 citations between these documents in Crossref (excluding citations that are closed). The data has been extracted from Crossref’s XML Metadata Plus Snapshot downloaded on March 5, 2021.