Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
55,098
Arctic Data Center (via DataONE)
12,766
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
5,284
Arctic Institute of North America
4,889
Unknown
3,955
Springer Nature
2,633
Zenodo
2,323
Springer Nature (via Crossref)
1,998
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
1,937
Informa (via Crossref)
1,764
DataCite
1,747
CyberLeninka (Scientific Electronic Library)
1,746
NOAA NCEI Environmental Data Archive (via DataONE)
1,701
David Rumsey Historical Map Collection (Cartography Associates)
1,517
Cambridge University Press
1,403
Dryad Digital Repository (Duke University)
1,382
RePEc (Research Papers in Economics)
1,325
IOP Publishing
1,244
NASA Technical Reports Server (NTRS)
1,047
JSTOR (via Crossref)
1,040
University of Washington, Seattle: Digital Collections
1,021
Frontiers: Figshare
986
Informa
983
University of Michigan: Digital Collections
909
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
852
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
836
University of California: eScholarship
760
JSTOR
607
Wiley Online Library
562
USGS Science Data Catalog (via DataONE)
548
Arctic Council Repository
521
Natural Environment Research Council: NERC Open Research Archive
500
Brill
464
Frontiers (Publisher)
458
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
453
Oxford University Press (via Crossref)
429
ArXiv.org (Cornell University Library)
397
IEEE Publications (via Crossref)
383
University of New Hampshire: Scholars Repository
370
ScienceDirect (Elsevier)
356
De Gruyter
350
Brill (via Crossref)
346
Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE)
331
Biodiversity Heritage Library (BHL)
326
University of Toronto Press (U Toronto Press - via Crossref)
324
IEEE Publications
298
University of Michigan: Deep Blue
295
University of Nebraska-Lincoln: DigitalCommons@UNL
288
ScienceDirect (Elsevier - via Crossref)
287
AIP Publishing
286
more ...