Frequently asked questions

• What does this tool show?

  Every work registered under a DOI prefix, ranked by the number of citations received — from most to least cited.

• Where does the citation count come from?

  From the is-referenced-by-count field of the Crossref API, which counts citations registered among members participating in Cited-by.

• Why does the count differ from Google Scholar?

  Google Scholar crawls the web and includes theses, preprints and other documents; Crossref counts only formally registered citations. Scholar numbers are usually higher.

• Can I filter by year?

  Yes. After the query, use the publication year selector to narrow the list.