Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
49,161
Directory of Open Access Journals: DOAJ Articles
2,521
University of Tromsø: Munin Open Research Archive
2,298
Unknown
2,264
Zenodo
1,607
Wiley Online Library (via Crossref)
939
PubMed Central (PMC)
931
LeibnizOpen (The Leibniz Association)
808
Wiley Online Library
788
PANGAEA - Data Publisher for Earth & Environmental Science
750
NTNU Open Archive (Norwegian University of Science and Technology)
704
Norwegian Institute for Nature Research: Brage NINA
668
Institute for Marine Research: Brage IMR
643
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
643
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
638
University of Bergen: Bergen Open Research Archive (BORA-UiB)
542
Informa (via Crossref)
533
Open archive Norwegian University of Life Sciences: Brage NMBU
526
Cambridge University Press
522
RePEc (Research Papers in Economics)
509
Springer Nature (via Crossref)
499
ScienceDirect (Elsevier - via Crossref)
497
North Dakota State University (NDSU): Digital Horizons
474
HighWire Press (Stanford University)
424
Université de Nantes: HAL-UNIV-NANTES
375
NGU Open Archive (Geological Survey of Norway)
352
UNESDOC - UNESCO Digital Library
342
Defense Technical Information Center: DTIC Technical Reports database
327
Copernicus Publications: E-Journals
325
Aarhus University: Research
312
Dryad Digital Repository (Duke University)
310
University of Tromsø: Septentrio Academic Publishing
297
David Rumsey Historical Map Collection (Cartography Associates)
296
University of Copenhagen: Research
270
DataverseNO
260
MDPI Open Access Publishing
252
Institut national des sciences de l'Univers: HAL-INSU
246
Niedersächsisches Online-Archiv NOA
245
Arctic Council Repository
241
University of Michigan: Digital Collections
241
SAGE Publications (via Crossref)
239
Oxford University Press (via Crossref)
203
CESSDA DC Data Catalogue (Consortium of European Social Science Data Archives)
195
norden (Nordic Council of Ministers): Publications (DiVA)
192
Lund University Publications (LUP)
186
Digital.CSIC (Spanish National Research Council)
178
Open archive Nord universitet
171
Arctic Data Center (via DataONE)
165
da|ra - Registration agency for social and economic data
165
HELDA – University of Helsinki Open Repository
162
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