Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
10,338
DataCite
39
Dryad Digital Repository (Duke University)
6
Zenodo
5
Unknown
4
Directory of Open Access Journals: DOAJ Articles
3
Magnolia press
2
Arctic Review on Law and Politics
1
Frontiers: Figshare
1
Polar Research
1
Purdue University: e-Pubs
1
USGS Science Data Catalog (via DataONE)
1
University of Bath's research portal
1
University of North Texas: UNT Digital Library
1
University of Wollongong, Australia: Research Online
1
Xiamen University Institutional Repository
1
ediss.sub.hamburg (Staats- und Universitätsbibliothek Hamburg, Carl von Ossietzky)
1