Content Provider
Directory of Open Access Journals: DOAJ Articles
16
Research Data Australia (Australian National Data Service - ANDS)
13
University of Tasmania: UTas ePrints
12
eCite UTAS (University of Tasmania)
10
Copernicus Publications: E-Journals
8
Cambridge University Press
6
University of California: eScholarship
6
DataCite Metadata Store (German National Library of Science and Technology)
5
MDPI Open Access Publishing
5
Texas A&M University Digital Repository
5
Unknown
5
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
4
Niedersächsisches Online-Archiv NOA
4
PANGAEA - Data Publisher for Earth & Environmental Science
3
German Aerospace Center: elib - DLR electronic library
2
Montclair State University Digital Commons
2
University of Bristol: Bristol Research
2
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
Dresden University of Technology: Qucosa
1
Durham University: Durham Research Online
1
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
1
Macquarie University Research Portal
1
Masaryk University Journals
1
Munipress - Masaryk University Press
1
NASA Technical Reports Server (NTRS)
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
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
1
ScienceDirect (Elsevier - via Crossref)
1
The University of Liverpool Repository
1
The University of Queensland: UQ eSpace
1
University of Massachusetts: ScholarWorks@UMass Amherst
1
University of Michigan: Deep Blue
1
University of Potsdam: publish.UP
1
White Rose Research Online (Universities of Leeds, Sheffield & York)
1
White Rose eTheses Online (Universities Leeds, Sheffield, York)
1
Würzburg University: Online Publication Service
1