Content Provider
Defense Technical Information Center: DTIC Technical Reports database
156
LeibnizOpen (The Leibniz Association)
86
Unknown
62
Directory of Open Access Journals: DOAJ Articles
61
University of Calgary Journal Hosting
54
DataCite Metadata Store (German National Library of Science and Technology)
36
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
24
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
24
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
23
University of North Texas: UNT Digital Library
20
Université de Nantes: HAL-UNIV-NANTES
17
Digital.CSIC (Spanish National Research Council)
16
Research Data Australia (Australian National Data Service - ANDS)
16
MDPI Open Access Publishing
13
Instituto Español de Oceanografía: e-IEO
10
CyberLeninka (Scientific Electronic Library)
9
Zenodo
9
Aarhus University: Research
8
University of St Andrews: Research Portal
8
Wageningen UR (University & Research Centre): Digital Library
8
University of Groningen research database
7
Frontiers: Figshare
6
Utah State University: DigitalCommons@USU
6
DRO - Deakin Research Online
5
I-Revues (E-Journals, INIST-CNRS)
4
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences)
4
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover)
4
Research Workspace (via DataONE)
4
Stellenbosch University: SUNScholar Research Repository
4
University of Tasmania: UTas ePrints
4
Université de Bretagne Occidentale: HAL
4
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
3
Dryad Digital Repository (Duke University)
3
Ghent University Academic Bibliography
3
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences)
3
HAL e2s UPPA (Université de Pau et des Pays de l'Adour)
3
Institut national des sciences de l'Univers: HAL-INSU
3
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
3
NORA (National aggregator of open repositories of Russian universities)
3
Pensoft Publishers
3
Universidade do Algarve: Sapienta
3
University of Liège: ORBi (Open Repository and Bibliography)
3
University of St Andrews: Digital Research Repository
3
Université de Montpellier: HAL
3
Uppsala University: Publications (DiVA)
3
Altai State University: Scientific Journals of ASU
2
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre)
2
Australian National University: ANU Digital Collections
2
Charles Darwin University: CDU eSpace
2
Digital Collections of Colorado (Colorado State University)
2
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