Content Provider
Directory of Open Access Journals: DOAJ Articles
718
DataCite Metadata Store (German National Library of Science and Technology)
711
Unknown
600
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
410
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
331
Copernicus Publications: E-Journals
272
Institut national des sciences de l'Univers: HAL-INSU
220
PANGAEA - Data Publisher for Earth & Environmental Science
214
Université de Nantes: HAL-UNIV-NANTES
211
eCite UTAS (University of Tasmania)
203
Niedersächsisches Online-Archiv NOA
190
National Institute of Polar Research Repository, Japan
187
Natural Environment Research Council: NERC Open Research Archive
146
PubMed Central (PMC)
139
Zenodo
134
HAL Sorbonne Université
116
Cambridge University Press
113
ScienceDirect (Elsevier - via Crossref)
112
Wiley Online Library (via Crossref)
104
Wiley Online Library
102
Springer Nature (via Crossref)
101
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
86
University of Tasmania: UTas ePrints
84
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
79
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
77
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
73
Digital.CSIC (Spanish National Research Council)
70
MDPI Open Access Publishing
68
HighWire Press (Stanford University)
66
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
59
LeibnizOpen (The Leibniz Association)
57
Muséum National d'Histoire Naturelle (MNHM): HAL
54
Université de Paris: Portail HAL
54
École Polytechnique, Université Paris-Saclay: HAL
54
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
53
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
50
Defense Technical Information Center: DTIC Technical Reports database
45
University of Southampton: e-Prints Soton
45
theses.fr
43
Archives ouvertes de Paris-Saclay
42
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
40
ScienceDirect (Elsevier)
39
University of St Andrews: Research Portal
38
Università degli Studi di Genova: CINECA IRIS
38
University of Groningen research database
37
Université Grenoble Alpes: HAL
37
IRD (Institute de recherche pour le développement): Horizon
36
Université de Bretagne Occidentale: HAL
35
Arctic Portal Library
34
University of Liège: ORBi (Open Repository and Bibliography)
31
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