Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
565
Directory of Open Access Journals: DOAJ Articles
427
Unknown
368
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
348
LeibnizOpen (The Leibniz Association)
345
Natural Environment Research Council: NERC Open Research Archive
327
Copernicus Publications: E-Journals
290
Niedersächsisches Online-Archiv NOA
189
University of California: eScholarship
157
Cambridge University Press
153
eCite UTAS (University of Tasmania)
132
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
119
Institut national des sciences de l'Univers: HAL-INSU
102
Research Data Australia (Australian National Data Service - ANDS)
96
PANGAEA - Data Publisher for Earth & Environmental Science
95
University of Tasmania: UTas ePrints
81
Université de Nantes: HAL-UNIV-NANTES
80
Northumbria University, Newcastle: Northumbria Research Link (NRL)
74
PubMed Central (PMC)
71
Utrecht University Repository
66
Zenodo
65
Springer Nature (via Crossref)
64
Université Grenoble Alpes: HAL
64
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
54
Apollo - University of Cambridge Repository
53
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
48
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
46
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
45
Wiley Online Library
45
Caltech Authors (California Institute of Technology)
42
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
38
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
37
NASA Technical Reports Server (NTRS)
37
University of Bristol: Bristol Research
37
Frontiers: Figshare
36
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
36
University of Liège: ORBi (Open Repository and Bibliography)
34
MDPI Open Access Publishing
32
University of Southampton: e-Prints Soton
32
German Aerospace Center: elib - DLR electronic library
31
HAL Sorbonne Université
31
University College London: UCL Discovery
30
University of East Anglia: UEA Digital Repository
30
Archives ouvertes de Paris-Saclay
29
AAAS Resource Center (American Association for the Advancement of Science)
28
Delft University of Technology: Institutional Repository
28
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
28
White Rose Research Online (Universities of Leeds, Sheffield & York)
26
Digital.CSIC (Spanish National Research Council)
25
Defense Technical Information Center: DTIC Technical Reports database
24
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