Content Provider
Directory of Open Access Journals: DOAJ Articles
16
University of Tasmania: UTas ePrints
12
eCite UTAS (University of Tasmania)
10
Copernicus Publications: E-Journals
8
MDPI Open Access Publishing
5
Unknown
5
Cambridge University Press
4
DataCite Metadata Store (German National Library of Science and Technology)
4
Niedersächsisches Online-Archiv NOA
4
PANGAEA - Data Publisher for Earth & Environmental Science
3
Texas A&M University Digital Repository
3
University of California: eScholarship
3
University of Southampton: e-Prints Soton
2
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
1
Caltech Authors (California Institute of Technology)
1
Delft University of Technology: Institutional Repository
1
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
1
Macquarie University Research Portal
1
Masaryk University Journals
1
National Institute of Polar Research Repository, Japan
1
Natural Environment Research Council: NERC Open Research Archive
1
Northumbria University, Newcastle: Northumbria Research Link (NRL)
1
Peking University Institutional Repository (PKU IR)
1
Polar Research (E-Journal)
1
PubMed Central (PMC)
1
Research UNE - University of New England at Armidale, NSW Australia
1
ScienceDirect (Elsevier - via Crossref)
1
The University of Liverpool Repository
1
The University of Queensland: UQ eSpace
1
University of Bristol: Bristol Research
1
University of Potsdam: publish.UP
1
White Rose Research Online (Universities of Leeds, Sheffield & York)
1
Würzburg University: Online Publication Service
1