Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
116
PANGAEA - Data Publisher for Earth & Environmental Science
94
Unknown
86
Directory of Open Access Journals: DOAJ Articles
72
Copernicus Publications: E-Journals
53
LeibnizOpen (The Leibniz Association)
43
Arctic Data Center (via DataONE)
41
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
38
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
34
Zenodo
34
Aarhus University: Research
31
DataCite
31
Niedersächsisches Online-Archiv NOA
29
Technical University of Denmark: DTU Orbit
25
University of Copenhagen: Research
22
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
19
Institut national des sciences de l'Univers: HAL-INSU
18
NASA Technical Reports Server (NTRS)
18
Wiley Online Library
18
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
17
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
16
University of California: eScholarship
16
Natural Environment Research Council: NERC Open Research Archive
15
Université de Nantes: HAL-UNIV-NANTES
15
University of Liège: ORBi (Open Repository and Bibliography)
14
Utrecht University Repository
14
Durham University: Durham Research Online
13
University College London: UCL Discovery
13
PubMed Central (PMC)
12
University of Tromsø: Munin Open Research Archive
12
Vrije Universiteit Amsterdam (VU): Research Portal
12
DIAL@UCLouvain (Université catholique de Louvain)
11
DIAL@USL-B (Université Saint-Louis, Bruxelles)
11
University of Bergen: Bergen Open Research Archive (BORA-UiB)
11
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
11
Cambridge University Press
10
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
10
Max Planck Society: MPG.PuRe
10
University of Bristol: Bristol Research
10
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
9
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
8
Bath Spa University: Figshare
7
Frontiers: Figshare
7
NIOZ Repository (Royal Netherlands Institute for Sea Research)
7
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
7
University of Lincoln: Lincoln Repository
7
Archives ouvertes de Paris-Saclay
6
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
6
Springer Nature (via Crossref)
6
White Rose Research Online (Universities of Leeds, Sheffield & York)
6
more ...