Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
3,794
Wiley Online Library (via Crossref)
2,088
ScienceDirect (Elsevier - via Crossref)
1,802
Directory of Open Access Journals: DOAJ Articles
1,351
Wiley Online Library
1,307
PubMed Central (PMC)
1,274
Unknown
1,253
ScienceDirect (Elsevier)
1,085
Springer Nature (via Crossref)
938
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
613
Institute for Marine Research: Brage IMR
592
Canadian Science Publishing (via Crossref)
567
Frontiers: Figshare
538
Open archive Norwegian University of Life Sciences: Brage NMBU
525
eCite UTAS (University of Tasmania)
486
University of Stirling: Stirling Digital Research Repository
413
University of Bergen: Bergen Open Research Archive (BORA-UiB)
400
Canadian Science Publishing
381
University of Massachusetts: ScholarWorks@UMass Amherst
345
Université de Nantes: HAL-UNIV-NANTES
345
NTNU Open Archive (Norwegian University of Science and Technology)
336
Nofima Knowledge Archive (Brage)
295
Norwegian Institute for Nature Research: Brage NINA
263
Zenodo
260
HighWire Press (Stanford University)
245
MDPI Open Access Publishing
241
University of Tromsø: Munin Open Research Archive
226
Frontiers (Publisher)
208
Technical University of Denmark: DTU Orbit
203
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
202
Dryad Digital Repository (Duke University)
197
Oxford University Press
189
University of Tasmania: UTas ePrints
187
Natural Resources Institute Finland: Jukuri
181
HAL e2s UPPA (Université de Pau et des Pays de l'Adour)
178
BioMed Central
176
Oxford University Press (via Crossref)
171
Wageningen UR (University & Research Centre): Digital Library
163
University of the Highlands and Islands: Research Database of UHI
131
University of Glasgow: Enlighten - Publications
128
Norwegian Institute for Water research: NIVA Open Access Archive (Brage)
126
Portland Public Library: Digital Commons
123
University of St Andrews: Research Portal
123
Cambridge University Press
119
Memorial University of Newfoundland: Research Repository
109
DRO - Deakin Research Online
108
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
104
Informa (via Crossref)
102
Ghent University Academic Bibliography
101
Digital.CSIC (Spanish National Research Council)
92
more ...