Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
91
Frontiers: Figshare
23
National Library of Australia: Digital Collections
13
DataCite
9
KovsieScholar Repository (University of the Free State - UFS UV)
8
Unknown
6
Claremont Colleges Digital Library (CCDL)
2
Texas Tech University: TTU DSpace Repository
2
GettDigital (Gettysburg College Digital Collections)
1
Ohio State University (OSU): Knowledge Bank
1
Smithsonian Institution: Figshare
1
University of Miami: Digital Collections
1