Content Provider
Directory of Open Access Journals: DOAJ Articles
1,741
Unknown
509
DataCite Metadata Store (German National Library of Science and Technology)
410
Wiley Online Library
280
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
279
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
275
NORA (National aggregator of open repositories of Russian universities)
271
Cambridge University Press
214
Siberian Federal University: Archiv Elektronnych SFU
197
Niedersächsisches Online-Archiv NOA
193
LeibnizOpen (The Leibniz Association)
180
ScienceDirect (Elsevier - via Crossref)
178
Wiley Online Library (via Crossref)
175
Université de Nantes: HAL-UNIV-NANTES
171
Tomsk State University Research Library
164
IOP Publishing (via Crossref)
152
Zenodo
151
Altai State University: Scientific Journals of ASU
147
Institut national des sciences de l'Univers: HAL-INSU
144
Max Planck Society: MPG.PuRe
134
Springer Nature (via Crossref)
124
Informa (via Crossref)
120
RePEc (Research Papers in Economics)
115
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
81
Magnolia press
80
Lund University Publications (LUP)
75
University of Tyumen: UTMN Repository
68
University of Calgary Journal Hosting
64
University of Potsdam: publish.UP
64
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
60
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
59
Université Toulouse III - Paul Sabatier: HAL-UPS
57
HELDA – University of Helsinki Open Repository
56
University of Copenhagen: Research
56
Archives ouvertes de Paris-Saclay
50
University of Groningen research database
49
Ural Federal University (URFU): ELAR
48
Kazan Federal University Digital Repository
47
Frontiers (Publisher)
46
Wageningen UR (University & Research Centre): Digital Library
46
Cambridge University Press (via Crossref)
43
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
43
Météo-France: HAL
43
Tomsk Polytechnic University (TPU): Electronic Archive
43
Archaeology, Ethnology & Anthropology of Eurasia (E-Journal)
41
IOP Publishing
41
Vrije Universiteit Amsterdam (VU): Research Portal
41
University of California: eScholarship
40
Aarhus University: Research
39
DergiPark Akademik (E-Journals)
39
more ...