Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
36,029
LeibnizOpen (The Leibniz Association)
37
Unknown
11
Digital Repository of Scientific Institutes (RCIN)
8
Directory of Open Access Journals: DOAJ Articles
7
Geological Quarterly
7
Zenodo
5
AMUR - Adam Mickiewicz University Repository, Poznan
4
PubMed Central (PMC)
4
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
3
De Gruyter (via Crossref)
3
University of the Balearic Islands (UIB): Digital Library
3
Adam Mickiewicz University in Poznań: PRESSto
2
CyberLeninka (Scientific Electronic Library)
2
Czech Academy of Sciences: dKNAV
2
David Rumsey Historical Map Collection (Cartography Associates)
2
LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library)
2
LSRC VL (Lithuanian Social Research Centre Virtual Library)
2
MDPI Open Access Publishing
2
OpenAgrar (OA)
2
PANGAEA - Data Publisher for Earth & Environmental Science
2
Aarhus University: OJS at The State and University Library
1
Aix-Marseille Université: HAL
1
Archive Ouverte de l'Université Rennes (HAL)
1
BioMed Central
1
CNS Scientific Journals Online
1
Cambridge University Press
1
Collège de France: HAL
1
Digitale Sammlungen der Herzogin Anna Amalia Bibliothek Weimar (HAAB)
1
Erasmus University Rotterdam & Erasmus MC Research Portal
1
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
1
HAL - Université de La Rochelle
1
Hathi Trust Digital Library
1
HighWire Press (Stanford University)
1
Institut national des sciences de l'Univers: HAL-INSU
1
Jultika - University of Oulu repository
1
Lancaster University: Lancaster Eprints
1
Naruto University of Education Digital Collection
1
Natural Resources Institute Finland: Jukuri
1
North Dakota State University (NDSU): Digital Horizons
1
Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server
1
PUBLISSO Fachrepositorium Lebenswissenschaften (ZB MED)
1
Polish Botanical Society Journals
1
Portail HAL-ANR (Agence Nationale de la Recherche)
1
RWTH Aachen University: RWTH Publications
1
RePEc (Research Papers in Economics)
1
RePub - Publications from Erasmus University, Rotterdam
1
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
1
Repositorio Institucional UCC (Universidad Cooperativa de Colombia)
1
Repozytorium Uniwersytetu w Białymstoku (RUB)
1
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