Content Provider
Cambridge University Press
8,455
Wiley Online Library
4,200
Directory of Open Access Journals: DOAJ Articles
4,068
DataCite Metadata Store (German National Library of Science and Technology)
2,660
Wiley Online Library (via Crossref)
2,288
Springer Nature (via Crossref)
2,168
Oxford University Press (via Crossref)
1,773
Oxford University Press
1,505
ScienceDirect (Elsevier - via Crossref)
1,294
eCite UTAS (University of Tasmania)
586
Informa (via Crossref)
578
University of California: eScholarship
470
SAGE Publications
432
JSTOR (via Crossref)
425
SAGE Publications (via Crossref)
380
Lund University Publications (LUP)
365
ASM Journals (American Society for Microbiology)
341
Canadian Science Publishing (via Crossref)
293
De Gruyter (via Crossref)
256
Frontiers (Publisher)
230
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive
216
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
208
Informa
204
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
192
ASM Journals (American Society for Microbiology - via Crossref)
177
UmeƄ University: Publications (DiVA)
168
Canadian Science Publishing
167
Sciendo (de Gruyter - via CrossRef)
130
University of California Press (via Crossref)
125
JSTOR
118
University of California Press
114
The University of Queensland: UQ eSpace
113
Queen's University Belfast Research Portal
109
Unknown
101
Brill (via Crossref)
93
Cambridge University Press (via Crossref)
87
University of the Highlands and Islands: Research Database of UHI
71
ScienceDirect (Elsevier)
64
Utrecht University Repository
62
Uppsala University: Publications (DiVA)
61
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
46
Aberdeen University Research Archive (AURA)
44
LeibnizOpen (The Leibniz Association)
40
University of St Andrews: Digital Research Repository
36
Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences)
28
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
27
Michigan State University Press (via Crossref)
27
Ghent University Academic Bibliography
26
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
25
Schweizerbart Science Publishers (via Crossref)
23
more ...