Content Provider
Directory of Open Access Journals: DOAJ Articles
64
Unknown
54
DataCite Metadata Store (German National Library of Science and Technology)
45
National Institute of Polar Research Repository, Japan
37
Copernicus Publications: E-Journals
36
Niedersächsisches Online-Archiv NOA
30
ScienceDirect (Elsevier - via Crossref)
29
Natural Environment Research Council: NERC Open Research Archive
21
PANGAEA - Data Publisher for Earth & Environmental Science
20
LeibnizOpen (The Leibniz Association)
19
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
18
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
16
Springer Nature (via Crossref)
14
Ghent University Academic Bibliography
12
Université de Nantes: HAL-UNIV-NANTES
12
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
11
RWTH Aachen University: RWTH Publications
11
Utrecht University Repository
11
Cambridge University Press
10
University of Bergen: Bergen Open Research Archive (BORA-UiB)
9
HighWire Press (Stanford University)
8
University of Tasmania: UTas ePrints
7
eCite UTAS (University of Tasmania)
7
DataCite
6
National Institute of Oceanography, India: Digital Repository Service (DRS@nio)
6
Stockholm University: Publications (DiVA)
6
University of St Andrews: Research Portal
6
Institut national des sciences de l'Univers: HAL-INSU
5
KU Leuven: Lirias
5
University of Copenhagen: Research
5
Università degli Studi di Genova: CINECA IRIS
5
GEO-LEOe-docs (FID GEO)
4
MDPI Open Access Publishing
4
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
4
University of Cape Town: OpenUCT
4
Université Grenoble Alpes: HAL
4
Wiley Online Library
4
Aarhus University: Research
3
BORIS (Bern Open Repository and Information System, University of Bern)
3
DIAL@UCLouvain (Université catholique de Louvain)
3
DIAL@USL-B (Université Saint-Louis, Bruxelles)
3
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
3
Georg-August-Universität Göttingen: GoeScholar
3
HELDA – University of Helsinki Open Repository
3
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
3
Indian Institute of Geomagnetism (IIG): Repository
3
Macquarie University Research Portal
3
Norsk Polarinstitutt: Brage NP
3
Norwegian Polar Institute: Brage NP
3
University of Glasgow: Enlighten - Publications
3
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