Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
20
Munich University of Technology (TUM): mediaTUM
2
PubMed Central (PMC)
2
Springer Nature (via Crossref)
1
The Royal Society
1
University of Kassel: KOBRA (Kasseler Online Bibliothek Repository und Archiv)
1
Wiley Online Library
1
Zenodo
1