Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
261
LeibnizOpen (The Leibniz Association)
19
Unknown
12
University of Tromsø: Munin Open Research Archive
10
Directory of Open Access Journals: DOAJ Articles
9
PANGAEA - Data Publisher for Earth & Environmental Science
6
Copernicus Publications: E-Journals
4
Niedersächsisches Online-Archiv NOA
3
Polar Research (E-Journal)
3
PubMed Central (PMC)
3
University of St Andrews: Research Portal
3
AMUR - Adam Mickiewicz University Repository, Poznan
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
Arctic Data Center (via DataONE)
2
International Arctic Research Center (IARC) Data Archive (via DataONE)
2
MDPI Open Access Publishing
2
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
2
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
2
University of Bergen: Bergen Open Research Archive (BORA-UiB)
2
Wageningen UR (University & Research Centre): Digital Library
2
Apollo - University of Cambridge Repository
1
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
1
Cambridge University Press
1
Central Queensland University: aCQUIRe
1
Defense Technical Information Center: DTIC Technical Reports database
1
Durham University: Durham Research Online
1
Ghent University Academic Bibliography
1
Institut national des sciences de l'Univers: HAL-INSU
1
Institute for Marine Research: Brage IMR
1
Natural Environment Research Council: NERC Open Research Archive
1
Newcastle University Library ePrints Service
1
OPUS FAU - Online publication system of Friedrich-Alexander-Universität Erlangen-Nürnberg
1
PUBLISSO Fachrepositorium Lebenswissenschaften (ZB MED)
1
Polar Research
1
SAGE Publications (via Crossref)
1
Skemman (Iceland)
1
University of Calgary Journal Hosting
1
University of Lincoln: Lincoln Repository
1
University of Massachusetts: ScholarWorks@UMass Amherst
1
Université de Bretagne Occidentale: HAL
1
Wiley Online Library
1
Wiley Online Library (via Crossref)
1
eScholarship Repository (University of California)
1