Content Provider
Directory of Open Access Journals: DOAJ Articles
24
DataCite Metadata Store (German National Library of Science and Technology)
9
Copernicus Publications: E-Journals
8
Niedersächsisches Online-Archiv NOA
7
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
7
Unknown
6
Defense Technical Information Center: DTIC Technical Reports database
4
MDPI Open Access Publishing
4
PANGAEA - Data Publisher for Earth & Environmental Science
4
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
3
University of Bergen: Bergen Open Research Archive (BORA-UiB)
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
Delft University of Technology: Institutional Repository
1
Dialnet - Portada de revistas (Universidad de La Rioja)
1
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
1
Freie Universität Berlin: Refubium (FU Berlin)
1
HELDA – University of Helsinki Open Repository
1
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
1
National Institute of Polar Research Repository, Japan
1
OPUS - Publication Server of the University of Stuttgart
1
Open Access LMU (Ludwig-Maximilians-University Munich)
1
OpenAgrar (OA)
1
Pohang University of Science and Technology (POSTECH): Open Access System for Information Sharing (OASIS)
1
Portal de Revistas de la Universidad de La Rioja
1
Swedish Polar Research Secretariat: Swedish Polar Bibliography (DiVA)
1
UQAM - Université du Québec à Montréal: archipel
1
University College London: UCL Discovery
1
University of Nebraska-Lincoln: DigitalCommons@UNL
1
University of Southampton: e-Prints Soton
1
University of Tromsø: Septentrio Academic Publishing
1
Université de Lorraine: PETALE (Publications Et Travaux Académiques de LorrainE)
1
Université de Nantes: HAL-UNIV-NANTES
1
Vrije Universiteit Amsterdam (VU): Research Portal
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1
Zenodo
1