Content Provider
Directory of Open Access Journals: DOAJ Articles
22
DataCite Metadata Store (German National Library of Science and Technology)
21
LeibnizOpen (The Leibniz Association)
21
Copernicus Publications: E-Journals
13
Unknown
12
University of California: eScholarship
11
Niedersächsisches Online-Archiv NOA
10
Natural Environment Research Council: NERC Open Research Archive
9
PubMed Central (PMC)
9
Cambridge University Press
7
Northumbria University, Newcastle: Northumbria Research Link (NRL)
6
University of Calgary Journal Hosting
5
University of Copenhagen: Research
5
eCite UTAS (University of Tasmania)
5
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
4
Technical University of Denmark: DTU Orbit
4
The University of Manchester: Research Explorer
4
Wiley Online Library
4
Zenodo
4
Aarhus University: Research
3
German Aerospace Center: elib - DLR electronic library
3
LaCRIS - University of Lapland Current Research System
3
MDPI Open Access Publishing
3
University of Alaska: ScholarWorks@UA
3
University of Tromsø: Munin Open Research Archive
3
University of the Highlands and Islands: Research Database of UHI
3
AAAS Resource Center (American Association for the Advancement of Science)
2
Archives ouvertes de Paris-Saclay
2
Defense Technical Information Center: DTIC Technical Reports database
2
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto
2
Institut national des sciences de l'Univers: HAL-INSU
2
ONERA: HAL (French Aerospace Lab)
2
ORA - Oxford University Research Archive
2
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
2
Ohio State University (OSU): Knowledge Bank
2
PANGAEA - Data Publisher for Earth & Environmental Science
2
ScholarsArchive@OSU (Oregon State University)
2
University of Bergen: Bergen Open Research Archive (BORA-UiB)
2
University of Glasgow: Enlighten - Publications
2
University of Southampton: e-Prints Soton
2
University of Tasmania: UTas ePrints
2
Université de Nantes: HAL-UNIV-NANTES
2
White Rose Research Online (Universities of Leeds, Sheffield & York)
2
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
2
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre)
1
Apollo - University of Cambridge Repository
1
Columbia University: Academic Commons
1
Delft University of Technology: Institutional Repository
1
ENEA-IRIS Open Archive (Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile)
1
ETH Zürich Research Collection
1
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