Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
86
PANGAEA - Data Publisher for Earth & Environmental Science
14
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
8
Digital.CSIC (Spanish National Research Council)
6
Natural Environment Research Council: NERC Open Research Archive
5
University of East Anglia: UEA Digital Repository
5
Zenodo
5
Directory of Open Access Journals: DOAJ Articles
4
University of Southampton: e-Prints Soton
4
Unknown
4
Ghent University Academic Bibliography
3
Copernicus Publications: E-Journals
2
Niedersächsisches Online-Archiv NOA
2
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
2
OpenMETU (Middle East Technical University)
2
Springer Nature (via Crossref)
2
University of the Highlands and Islands: Research Database of UHI
2
Aarhus University: Research
1
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
1
Caltech Authors (California Institute of Technology)
1
DIGIBUG: Repositorio Institucional de la Universidad de Granada
1
Digital Commons University of South Florida (USF)
1
Dokuz Eylül University Research Information System
1
ETH Zürich Research Collection
1
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
1
HighWire Press (Stanford University)
1
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
1
NIOZ Repository (Royal Netherlands Institute for Sea Research)
1
NTNU Open Archive (Norwegian University of Science and Technology)
1
PubMed Central (PMC)
1
University of Groningen research database
1
University of South Florida St. Petersburg: Digital USFSP
1
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
1
Université de Lausanne (UNIL): Serval - Serveur académique lausannois
1
Utrecht University Repository
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1