Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
27,040
DataCite Metadata Store (German National Library of Science and Technology)
7,027
Unknown
5,573
Directory of Open Access Journals: DOAJ Articles
4,330
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2,772
Institut national des sciences de l'Univers: HAL-INSU
1,991
Copernicus Publications: E-Journals
1,827
Université de Nantes: HAL-UNIV-NANTES
1,747
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
1,712
Digital.CSIC (Spanish National Research Council)
1,710
ScienceDirect (Elsevier - via Crossref)
1,585
Defense Technical Information Center: DTIC Technical Reports database
1,557
Wiley Online Library
1,496
LeibnizOpen (The Leibniz Association)
1,353
Niedersächsisches Online-Archiv NOA
1,275
PubMed Central (PMC)
1,274
Springer Nature (via Crossref)
1,270
Wiley Online Library (via Crossref)
1,245
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
1,095
Instituto Español de Oceanografía: e-IEO
959
HAL Sorbonne Université
810
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
790
Cambridge University Press
787
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
781
University of Southampton: e-Prints Soton
766
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
756
Natural Environment Research Council: NERC Open Research Archive
650
Max Planck Society: MPG.PuRe
641
ScienceDirect (Elsevier)
588
HighWire Press (Stanford University)
549
MDPI Open Access Publishing
543
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
525
Université de Bretagne Occidentale: HAL
484
École Polytechnique, Université Paris-Saclay: HAL
439
Archives ouvertes de Paris-Saclay
420
Aarhus University: Research
377
Muséum National d'Histoire Naturelle (MNHM): HAL
375
University of Bergen: Bergen Open Research Archive (BORA-UiB)
369
University of Copenhagen: Research
366
Université de Paris: Portail HAL
362
Universidad de Las Palmas de Gran Canaria: Acceda
358
CentAUR: Central Archive at the University of Reading
340
Informa (via Crossref)
313
University of the Highlands and Islands: Research Database of UHI
312
Biodiversity Heritage Library (BHL)
296
Oxford University Press (via Crossref)
291
University of St Andrews: Research Portal
288
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
282
Utrecht University Repository
265
University of California: eScholarship
263
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