Content Provider
Cambridge University Press
8,329
DataCite Metadata Store (German National Library of Science and Technology)
7,982
Directory of Open Access Journals: DOAJ Articles
4,068
Unknown
2,614
Springer Nature (via Crossref)
2,168
Oxford University Press (via Crossref)
1,562
Wiley Online Library
1,492
Oxford University Press
1,138
ScienceDirect (Elsevier - via Crossref)
1,077
Wiley Online Library (via Crossref)
857
eCite UTAS (University of Tasmania)
751
The Royal Society: Figshare
629
University of California: eScholarship
565
Informa (via Crossref)
541
Lund University Publications (LUP)
442
JSTOR (via Crossref)
414
Frontiers: Figshare
369
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
349
DRO - Deakin Research Online
343
SAGE Publications (via Crossref)
328
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive
326
SAGE Publications
319
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
298
Canadian Science Publishing (via Crossref)
272
Umeå University: Publications (DiVA)
271
ScienceDirect (Elsevier)
261
De Gruyter (via Crossref)
244
ASM Journals (American Society for Microbiology)
234
Universidad de Salamanca: Gredos (Gestión del Repositorio Documental de la Universidad de Salamanca)
224
Informa
193
Frontiers (Publisher)
176
Defense Technical Information Center: DTIC Technical Reports database
172
ASM Journals (American Society for Microbiology - via Crossref)
159
LeibnizOpen (The Leibniz Association)
159
PubMed Central (PMC)
150
University of Alaska: ScholarWorks@UA
131
Sciendo (de Gruyter - via CrossRef)
130
KovsieScholar Repository (University of the Free State - UFS UV)
127
Canadian Science Publishing
126
Arctic Data Center (via DataONE)
121
The University of Queensland: UQ eSpace
118
University of California Press (via Crossref)
108
JSTOR
102
York University, Toronto: YorkSpace
101
Brill (via Crossref)
93
Uppsala University: Publications (DiVA)
87
University of California Press
82
Cambridge University Press (via Crossref)
79
Purdue University: e-Pubs
77
Dryad Digital Repository (Duke University)
71
more ...