Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
334
Directory of Open Access Journals: DOAJ Articles
167
Copernicus Publications: E-Journals
128
Niedersächsisches Online-Archiv NOA
78
LeibnizOpen (The Leibniz Association)
75
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
53
Unknown
47
National Institute of Polar Research Repository, Japan
31
MDPI Open Access Publishing
30
Université de Nantes: HAL-UNIV-NANTES
30
Institut national des sciences de l'Univers: HAL-INSU
28
NILU – Norwegian Institute for Air Research: NILU Brage
25
NTNU Open Archive (Norwegian University of Science and Technology)
24
PANGAEA - Data Publisher for Earth & Environmental Science
24
ScienceDirect (Elsevier - via Crossref)
22
PubMed Central (PMC)
20
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
18
Polar Research (E-Journal)
17
Springer Nature (via Crossref)
17
Arctic Portal Library
12
University of Tromsø: Munin Open Research Archive
12
ETH Zürich Research Collection
10
IRIS Università degli Studi di Perugia
8
Université Grenoble Alpes: HAL
8
ScienceDirect (Elsevier)
7
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
6
Natural Environment Research Council: NERC Open Research Archive
6
Université de Paris: Portail HAL
6
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
5
Stockholm University: Publications (DiVA)
5
Università degli Studi di Genova: CINECA IRIS
5
Cologne University: KUPS
4
Hereon Publications (Helmholtz-Zentrum)
4
Polar Research
4
University of Potsdam: publish.UP
4
Wageningen UR (University & Research Centre): Digital Library
4
Aarhus University: Research
3
Cambridge University Press
3
DataCite
3
GEO-LEOe-docs (FID GEO)
3
German Aerospace Center: elib - DLR electronic library
3
HAL Lyon 1 (University Claude Bernard Lyon 1)
3
HighWire Press (Stanford University)
3
Hindawi Publishing Corporation
3
INSA Lyon HAL (Institut National des Sciences Appliquées)
3
Informa (via Crossref)
3
Joint Research Centre, European Commission: JRC Publications Repository
3
KITopen (Karlsruhe Institute of Technologie)
3
Max Planck Society: MPG.PuRe
3
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
3
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