Content Provider
Cambridge University Press
8,455
Wiley Online Library
4,185
Directory of Open Access Journals: DOAJ Articles
4,011
Wiley Online Library (via Crossref)
2,277
Springer Nature (via Crossref)
1,926
Oxford University Press (via Crossref)
1,597
Oxford University Press
1,450
ScienceDirect (Elsevier - via Crossref)
1,288
eCite UTAS (University of Tasmania)
751
Informa (via Crossref)
575
SAGE Publications
432
Lund University Publications (LUP)
427
SAGE Publications (via Crossref)
379
ASM Journals (American Society for Microbiology)
341
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
325
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive
300
Canadian Science Publishing (via Crossref)
287
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
284
Umeå University: Publications (DiVA)
256
Informa
195
ASM Journals (American Society for Microbiology - via Crossref)
177
Defense Technical Information Center: DTIC Technical Reports database
172
Canadian Science Publishing
155
PubMed Central (PMC)
150
DataCite Metadata Store (German National Library of Science and Technology)
131
University of California Press (via Crossref)
125
University of California Press
114
The University of Queensland: UQ eSpace
113
University of California: eScholarship
110
Queen's University Belfast Research Portal
109
York University, Toronto: YorkSpace
90
Cambridge University Press (via Crossref)
87
Uppsala University: Publications (DiVA)
84
LeibnizOpen (The Leibniz Association)
76
Unknown
72
University of the Highlands and Islands: Research Database of UHI
71
ScienceDirect (Elsevier)
64
Utrecht University Repository
62
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
57
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
46
Aberdeen University Research Archive (AURA)
44
University of St Andrews: Digital Research Repository
37
De Gruyter (via Crossref)
30
Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences)
29
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
28
Dalhousie University: DalSpace Institutional Repository
28
University of Liège: ORBi (Open Repository and Bibliography)
28
University of North Texas: UNT Digital Library
28
University of Washington, Seattle: ResearchWorks
28
Karlstad University: Publications (DIVA)
27
more ...