Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
930
Directory of Open Access Journals: DOAJ Articles
3
MDPI Open Access Publishing
2
Research Data Australia (Australian National Data Service - ANDS)
2
Apollo - University of Cambridge Repository
1
Copernicus Publications: E-Journals
1
DataCite
1
Digital.CSIC (Spanish National Research Council)
1
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
1
Georg-August-Universität Göttingen: GOEDOC
1
HELDA – University of Helsinki Open Repository
1
IEDA: US Antarctic Program Data Center (via DataONE)
1
Ice and Snow (E-Journal)
1
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
1
Natural Environment Research Council: NERC Open Research Archive
1
Naturalis Digital Academic Repository (National Museum of Natural History in the Netherlands)
1
Naturalis Institutional Repository
1
Niedersächsisches Online-Archiv NOA
1
PubMed Central (PMC)
1
University of East Anglia: UEA Digital Repository
1