Content Provider
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
130
DataCite Metadata Store (German National Library of Science and Technology)
74
Natural Environment Research Council: NERC Open Research Archive
61
PANGAEA - Data Publisher for Earth & Environmental Science
41
Directory of Open Access Journals: DOAJ Articles
35
Copernicus Publications: E-Journals
31
University of California: eScholarship
31
Unknown
31
LeibnizOpen (The Leibniz Association)
20
Niedersächsisches Online-Archiv NOA
19
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
14
PubMed Central (PMC)
11
University College London: UCL Discovery
11
Utrecht University Repository
11
Digital Commons University of South Florida (USF)
9
IEDA: US Antarctic Program Data Center (via DataONE)
9
Northumbria University, Newcastle: Northumbria Research Link (NRL)
9
ScienceDirect (Elsevier - via Crossref)
9
University of South Florida St. Petersburg: Digital USFSP
9
The University of Maine: DigitalCommons@UMaine
8
Zenodo
8
eCite UTAS (University of Tasmania)
8
Springer Nature (via Crossref)
7
University of Bristol: Bristol Research
7
White Rose Research Online (Universities of Leeds, Sheffield & York)
7
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
7
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
6
Université de Nantes: HAL-UNIV-NANTES
6
Imperial College London: Spiral
5
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
5
Apollo - University of Cambridge Repository
4
Cambridge University Press
4
Central Washington University: ScholarWorks
4
Lancaster University: Lancaster Eprints
4
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
4
University of Southampton: e-Prints Soton
4
Université Grenoble Alpes: HAL
4
ACS Publications
3
Columbia University: Academic Commons
3
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
3
MDPI Open Access Publishing
3
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
3
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
3
The Open University: Open Research Online (ORO)
3
The University of Texas at Austin: Texas ScholarWorks
3
University of Glasgow: Enlighten - Publications
3
University of Tasmania: UTas ePrints
3
Clark University: Clark Digital Commons
2
DSpace@MIT (Massachusetts Institute of Technology)
2
Delft University of Technology: Institutional Repository
2
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