Content Provider
Directory of Open Access Journals: DOAJ Articles
23
Natural Environment Research Council: NERC Open Research Archive
8
Geological Quarterly
6
Unknown
6
DataCite Metadata Store (German National Library of Science and Technology)
5
Springer Nature (via Crossref)
5
Niedersächsisches Online-Archiv NOA
4
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
4
University of California: eScholarship
4
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
3
IOP Publishing
2
Research Center for Eco-Environmental Sciences: RCEES OpenIR (Chinese Academy of Sciences)
2
University of Tasmania: UTas ePrints
2
Utrecht University Repository
2
Wiley Online Library (via Crossref)
2
eCite UTAS (University of Tasmania)
2
Biblioteca Digital de Periódicos da UFPR (Universidade Federal do Paraná)
1
Carolina Digital Repository (UNC - University of North Carolina)
1
Columbia University: Academic Commons
1
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
1
Digital.CSIC (Spanish National Research Council)
1
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
1
Frontiers (Publisher)
1
Imperial College London: Spiral
1
Magnolia press
1
Northumbria University, Newcastle: Northumbria Research Link (NRL)
1
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
1
ScholarWorks@UNIST (Ulsan National Institute of Science and Technology)
1
SciELO Brazil (Scientific Electronic Library Online)
1
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
1
University of Exeter: Open Research Exeter (ORE)
1
White Rose Research Online (Universities of Leeds, Sheffield & York)
1
Zenodo
1