Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
24
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
7
YUNOCA - Yamaguchi University Navigator for Open access Collection and Archives
5
Australian National University: ANU Digital Collections
2
Curtin University: espace
2
Informa (via Crossref)
2
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
1
Geological Society of London: Figshare
1
Natural Environment Research Council: NERC Open Research Archive
1
The Open University: Open Research Online (ORO)
1
University of Kent: KAR - Kent Academic Repository
1
e-periodica (Swiss journals online, ETH Zurich)
1