Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
215
Aarhus University: Research
130
Directory of Open Access Journals: DOAJ Articles
93
Unknown
76
Wageningen UR (University & Research Centre): Digital Library
61
University of Liège: ORBi (Open Repository and Bibliography)
58
PubMed Central (PMC)
47
University of St Andrews: Research Portal
46
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
45
Digital.CSIC (Spanish National Research Council)
44
Wiley Online Library
41
Cambridge University Press
38
Zenodo
38
University of St Andrews: Digital Research Repository
34
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
33
Springer Nature (via Crossref)
31
ScienceDirect (Elsevier - via Crossref)
30
Université de Nantes: HAL-UNIV-NANTES
28
Technical University of Denmark: DTU Orbit
27
University of Copenhagen: Research
24
University of Tromsø: Septentrio Academic Publishing
23
Utrecht University Repository
23
Institut national des sciences de l'Univers: HAL-INSU
22
Dryad Digital Repository (Duke University)
21
HAL - Université de La Rochelle
21
İstanbul Üniversitesi Açık Erişim Sistemi
21
ScienceDirect (Elsevier)
19
HighWire Press (Stanford University)
18
University of Southern Denmark Research Portal
18
Canadian Science Publishing (via Crossref)
17
University of the Highlands and Islands: Research Database of UHI
17
Canadian Science Publishing
15
LeibnizOpen (The Leibniz Association)
15
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
14
SRUC (Scotland's Rural College): Research Portal
14
The Royal Society: Figshare
14
Instituto Español de Oceanografía: e-IEO
13
OpenAgrar (OA)
13
Institute for Marine Research: Brage IMR
12
Oxford University Press
12
Frontiers: Figshare
11
MDPI Open Access Publishing
11
University of Glasgow: Enlighten - Publications
10
Aberdeen University Research Archive (AURA)
9
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
9
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
9
University of Groningen research database
9
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
8
Frontiers (Publisher)
8
The Royal Society
8
more ...