Content Provider
Directory of Open Access Journals: DOAJ Articles
313
DataCite Metadata Store (German National Library of Science and Technology)
292
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
239
Université de Nantes: HAL-UNIV-NANTES
186
University of California: eScholarship
181
Caltech Authors (California Institute of Technology)
179
Institut national des sciences de l'Univers: HAL-INSU
145
ScienceDirect (Elsevier - via Crossref)
116
DSpace@MIT (Massachusetts Institute of Technology)
104
Cambridge University Press
103
Unknown
97
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
90
Cardiff University: ORCA (Online Research @ Cardiff)
89
Springer Nature (via Crossref)
89
ORA - Oxford University Research Archive
87
University College London: UCL Discovery
87
KITopen (Karlsruhe Institute of Technologie)
75
Niedersächsisches Online-Archiv NOA
74
Natural Environment Research Council: NERC Open Research Archive
67
Max Planck Society: MPG.PuRe
60
DESY Publication Database (PUBDB)
58
Università degli studi di Trieste: ArTS (Archivio della ricerca di Trieste)
54
Cambridge University Press (via Crossref)
47
Ghent University Academic Bibliography
46
IOP Publishing
46
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
46
The University of Melbourne: Digital Repository
45
ScienceDirect (Elsevier)
43
LeibnizOpen (The Leibniz Association)
37
The University of Arizona: UA Campus Repository
35
Wiley Online Library
35
The University of Adelaide: Digital Library
34
Digital.CSIC (Spanish National Research Council)
30
Université de Paris: Portail HAL
30
Université de Genève: Archive ouverte UNIGE
28
Royal Holloway University of London: Royal Holloway Digital Repository
27
Curtin University: espace
25
Harvard University: DASH - Digital Access to Scholarship at Harvard
25
OA@INAF (Istituto Nazionale di Astrofisica)
25
Sapienza Università di Roma: CINECA IRIS
25
University of North Texas: UNT Digital Library
25
The University of Manchester: Research Explorer
24
University of Sussex: Sussex Research Online
24
AAAS Resource Center (American Association for the Advancement of Science)
23
Imperial College London: Spiral
22
Research Archive of Indian Institute of Technology, Hyderabad (RAIITH)
22
Université Grenoble Alpes: HAL
22
The Royal Society
21
BORIS (Bern Open Repository and Information System, University of Bern)
17
University of Copenhagen: Research
17
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