Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
17
Directory of Open Access Journals: DOAJ Articles
17
Unknown
14
Copernicus Publications: E-Journals
9
Ohio State University (OSU): Knowledge Bank
9
Cambridge University Press
8
Niedersächsisches Online-Archiv NOA
8
University of Calgary Journal Hosting
8
Natural Environment Research Council: NERC Open Research Archive
6
Defense Technical Information Center: DTIC Technical Reports database
3
PubMed Central (PMC)
3
University of Groningen research database
3
eCite UTAS (University of Tasmania)
3
ARPI - Archivio della Ricerca dell'Università di Pisa
2
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
2
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2
Arctic Portal Library
2
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
2
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
2
HELDA – University of Helsinki Open Repository
2
MDPI Open Access Publishing
2
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
2
PANGAEA - Data Publisher for Earth & Environmental Science
2
University of Bergen: Bergen Open Research Archive (BORA-UiB)
2
University of Southampton: e-Prints Soton
2
Utrecht University Repository
2
White Rose Research Online (Universities of Leeds, Sheffield & York)
2
Zenodo
2
AAAS Resource Center (American Association for the Advancement of Science)
1
ASU VL (VMU - Vytautas Magnus University Agriculture Academy Virtual Library)
1
Apollo - University of Cambridge Repository
1
Archive de l'Observatoire de Paris (HAL)
1
Australian National University: ANU Digital Collections
1
Cambridge University Press (via Crossref)
1
CentAUR: Central Archive at the University of Reading
1
DataSpace at Princeton University
1
ENEA-IRIS Open Archive (Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile)
1
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
1
GEUS Bulletin (Geological Survey of Denmark and Greenland)
1
Hathi Trust Digital Library
1
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto
1
Informa (via Crossref)
1
Institut national des sciences de l'Univers: HAL-INSU
1
Kristianstad University College: Publications (DiVA)
1
LAEI VL (Lithuanian Institute of Agrarian Economics Virtual Library)
1
LSRC VL (Lithuanian Social Research Centre Virtual Library)
1
LnuOpen (Linnaeus University)
1
Lund University Publications (LUP)
1
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
1
NORCE vitenarkiv (Norwegian Research Centre)
1
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