Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
21,681
NOAA NCEI Environmental Data Archive (via DataONE)
5
Arctic Data Center (via DataONE)
4
RePEc (Research Papers in Economics)
4
North Dakota State University (NDSU): Digital Horizons
2
ArXiv.org (Cornell University Library)
1
Bentham Science Publishers (via Crossref)
1
CyberLeninka (Scientific Electronic Library)
1
IOP Publishing
1
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
1
Max Planck Society: MPG.PuRe
1
Natural Environment Research Council: NERC Open Research Archive
1
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
1
University of California: eScholarship
1