Content Provider
Directory of Open Access Journals: DOAJ Articles
209
Natural Environment Research Council: NERC Open Research Archive
198
LeibnizOpen (The Leibniz Association)
155
Unknown
78
Niedersächsisches Online-Archiv NOA
68
University of California: eScholarship
58
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
42
DataCite Metadata Store (German National Library of Science and Technology)
37
eCite UTAS (University of Tasmania)
37
Université de Nantes: HAL-UNIV-NANTES
31
Cambridge University Press
30
Utrecht University Repository
28
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
25
Australian National University: ANU Digital Collections
23
Northumbria University, Newcastle: Northumbria Research Link (NRL)
22
Durham University: Durham Research Online
21
Imperial College London: Spiral
20
University College London: UCL Discovery
20
White Rose Research Online (Universities of Leeds, Sheffield & York)
19
Vernadsky National Library of Ukraine: DSpace
18
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
17
University of Southampton: e-Prints Soton
17
Institut national des sciences de l'Univers: HAL-INSU
16
University of Tasmania: UTas ePrints
15
Apollo - University of Cambridge Repository
14
Caltech Authors (California Institute of Technology)
13
Digital Commons University of South Florida (USF)
13
University of South Florida St. Petersburg: Digital USFSP
13
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
11
Wiley Online Library
10
Digital.CSIC (Spanish National Research Council)
9
Lancaster University: Lancaster Eprints
9
University of Glasgow: Enlighten - Publications
9
Archives ouvertes de Paris-Saclay
8
Columbia University: Academic Commons
8
Delft University of Technology: Institutional Repository
8
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
8
University of Bristol: Bristol Research
8
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
7
Max Planck Society: MPG.PuRe
7
Montana State University (MSU): ScholarWorks
7
Polar Research (E-Journal)
7
Springer Nature (via Crossref)
7
Universidad de Chile: Repositorio académico
7
Université Grenoble Alpes: HAL
7
Arctic Portal Library
6
DIAL@UCLouvain (Université catholique de Louvain)
6
DIAL@USL-B (Université Saint-Louis, Bruxelles)
6
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
6
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
6
more ...