Content Provider
Unknown
200
DataCite Metadata Store (German National Library of Science and Technology)
197
PANGAEA - Data Publisher for Earth & Environmental Science
136
Directory of Open Access Journals: DOAJ Articles
113
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
102
Copernicus Publications: E-Journals
102
Institut national des sciences de l'Univers: HAL-INSU
92
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
85
Niedersächsisches Online-Archiv NOA
64
LeibnizOpen (The Leibniz Association)
62
Université de Nantes: HAL-UNIV-NANTES
61
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
57
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
55
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
53
Cambridge University Press
36
Wiley Online Library
31
University of Bristol: Bristol Research
28
Utrecht University Repository
28
Archives ouvertes de Paris-Saclay
27
University of Liège: ORBi (Open Repository and Bibliography)
25
HAL Sorbonne Université
22
Vrije Universiteit Amsterdam (VU): Research Portal
22
DIAL@UCLouvain (Université catholique de Louvain)
21
DIAL@USL-B (Université Saint-Louis, Bruxelles)
21
EPHE (Ecole pratique des hautes études, Paris): HAL
21
PubMed Central (PMC)
21
University of Copenhagen: Research
21
Aarhus University: Research
20
University of Cambridge, Department of Earth Sciences: ESC Publications
20
University of Southampton: e-Prints Soton
20
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
19
Natural Environment Research Council: NERC Open Research Archive
19
University of St Andrews: Research Portal
19
AAAS Resource Center (American Association for the Advancement of Science)
18
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
18
Max Planck Society: MPG.PuRe
18
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
18
Cardiff University: ORCA (Online Research @ Cardiff)
17
University College London: UCL Discovery
17
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
16
BORIS (Bern Open Repository and Information System, University of Bern)
15
Springer Nature (via Crossref)
15
University of Bergen: Bergen Open Research Archive (BORA-UiB)
15
University of Lincoln: Lincoln Repository
14
White Rose Research Online (Universities of Leeds, Sheffield & York)
14
Wiley Online Library (via Crossref)
14
Columbia University: Academic Commons
13
University of California: eScholarship
13
École Polytechnique, Université Paris-Saclay: HAL
13
MDPI Open Access Publishing
12
more ...