Content Provider
LeibnizOpen (The Leibniz Association)
209
Unknown
171
DataCite Metadata Store (German National Library of Science and Technology)
155
Directory of Open Access Journals: DOAJ Articles
125
Copernicus Publications: E-Journals
100
Natural Environment Research Council: NERC Open Research Archive
98
PANGAEA - Data Publisher for Earth & Environmental Science
76
Niedersächsisches Online-Archiv NOA
68
Cambridge University Press
44
Springer Nature (via Crossref)
36
Northumbria University, Newcastle: Northumbria Research Link (NRL)
33
University of California: eScholarship
32
PubMed Central (PMC)
31
ScienceDirect (Elsevier - via Crossref)
29
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
28
AAAS Resource Center (American Association for the Advancement of Science)
24
University of Bristol: Bristol Research
22
Université de Nantes: HAL-UNIV-NANTES
20
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
16
Apollo - University of Cambridge Repository
15
Utrecht University Repository
15
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
14
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
14
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
13
eCite UTAS (University of Tasmania)
13
Rice University: Digital Scholarship Archive
12
University of Tromsø: Munin Open Research Archive
12
Università degli Studi di Siena: USiena air
12
Université Grenoble Alpes: HAL
12
Wiley Online Library (via Crossref)
12
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
11
University of Southampton: e-Prints Soton
11
Zenodo
11
BORIS (Bern Open Repository and Information System, University of Bern)
10
Max Planck Society: MPG.PuRe
10
University of Canterbury, Christchurch: UC Research Repository
10
Caltech Authors (California Institute of Technology)
9
Columbia University: Academic Commons
9
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
9
University of St Andrews: Research Portal
9
Vrije Universiteit Amsterdam (VU): Research Portal
9
Montana State University (MSU): ScholarWorks
8
ScienceDirect (Elsevier)
8
Università degli Studi di Genova: CINECA IRIS
8
Harvard University: DASH - Digital Access to Scholarship at Harvard
7
Imperial College London: Spiral
7
ScholarsArchive@OSU (Oregon State University)
7
The University of Texas at Austin: Texas ScholarWorks
7
University College London: UCL Discovery
7
University of Copenhagen: Research
7
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