Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
16,312
PANGAEA - Data Publisher for Earth & Environmental Science
13,494
Directory of Open Access Journals: DOAJ Articles
4,357
Unknown
4,016
Copernicus Publications: E-Journals
2,068
Defense Technical Information Center: DTIC Technical Reports database
1,902
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1,475
Niedersächsisches Online-Archiv NOA
1,389
Springer Nature (via Crossref)
1,142
Institut national des sciences de l'Univers: HAL-INSU
1,137
ScienceDirect (Elsevier - via Crossref)
1,008
eCite UTAS (University of Tasmania)
990
Université de Nantes: HAL-UNIV-NANTES
959
PubMed Central (PMC)
892
LeibnizOpen (The Leibniz Association)
813
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
790
MDPI Open Access Publishing
662
Natural Environment Research Council: NERC Open Research Archive
662
Cambridge University Press
643
Wiley Online Library
637
HAL Sorbonne Université
595
Zenodo
545
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
537
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
537
University of Tromsø: Munin Open Research Archive
534
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
495
National Institute of Polar Research Repository, Japan
461
Max Planck Society: MPG.PuRe
449
Wiley Online Library (via Crossref)
431
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
409
Aarhus University: Research
404
DIAL@USL-B (Université Saint-Louis, Bruxelles)
396
École Polytechnique, Université Paris-Saclay: HAL
386
University of Tasmania: UTas ePrints
378
Archives ouvertes de Paris-Saclay
360
Muséum National d'Histoire Naturelle (MNHM): HAL
350
ScienceDirect (Elsevier)
347
Université de Paris: Portail HAL
346
DIAL@UCLouvain (Université catholique de Louvain)
342
University of Calgary Journal Hosting
340
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
337
University of Bergen: Bergen Open Research Archive (BORA-UiB)
293
Technical University of Denmark: DTU Orbit
286
University of Liège: ORBi (Open Repository and Bibliography)
282
Informa (via Crossref)
269
University of Southampton: e-Prints Soton
263
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
251
CentAUR: Central Archive at the University of Reading
235
Université Grenoble Alpes: HAL
234
University College London: UCL Discovery
232
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