Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
48,730
Directory of Open Access Journals: DOAJ Articles
2,507
University of Tromsø: Munin Open Research Archive
2,287
Unknown
2,236
Zenodo
1,605
PubMed Central (PMC)
924
Wiley Online Library (via Crossref)
881
LeibnizOpen (The Leibniz Association)
773
PANGAEA - Data Publisher for Earth & Environmental Science
733
NTNU Open Archive (Norwegian University of Science and Technology)
703
Norwegian Institute for Nature Research: Brage NINA
666
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
643
Institute for Marine Research: Brage IMR
640
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
637
University of Bergen: Bergen Open Research Archive (BORA-UiB)
536
Open archive Norwegian University of Life Sciences: Brage NMBU
526
Informa (via Crossref)
513
RePEc (Research Papers in Economics)
509
Springer Nature (via Crossref)
499
ScienceDirect (Elsevier - via Crossref)
497
North Dakota State University (NDSU): Digital Horizons
474
Cambridge University Press
466
Wiley Online Library
464
HighWire Press (Stanford University)
424
Université de Nantes: HAL-UNIV-NANTES
370
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
321
Dryad Digital Repository (Duke University)
310
Aarhus University: Research
296
David Rumsey Historical Map Collection (Cartography Associates)
296
University of Tromsø: Septentrio Academic Publishing
296
MDPI Open Access Publishing
251
Niedersächsisches Online-Archiv NOA
243
Arctic Council Repository
241
University of Michigan: Digital Collections
241
SAGE Publications (via Crossref)
227
CESSDA DC Data Catalogue (Consortium of European Social Science Data Archives)
195
norden (Nordic Council of Ministers): Publications (DiVA)
190
Institut national des sciences de l'Univers: HAL-INSU
187
Digital.CSIC (Spanish National Research Council)
178
Oxford University Press (via Crossref)
177
Open archive Nord universitet
170
Arctic Data Center (via DataONE)
165
da|ra - Registration agency for social and economic data
165
DataverseNO
163
University of Copenhagen: Research
162
Norwegian Institute for Water research: NIVA Open Access Archive (Brage)
160
Frontiers: Figshare
159
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