Content Provider
Cambridge University Press
7,838
Directory of Open Access Journals: DOAJ Articles
4,313
Springer Nature (via Crossref)
1,926
DataCite
1,323
ScienceDirect (Elsevier - via Crossref)
1,071
Oxford University Press (via Crossref)
922
eCite UTAS (University of Tasmania)
751
Lund University Publications (LUP)
433
Wiley Online Library (via Crossref)
428
Informa (via Crossref)
367
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
325
Oxford University Press
319
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive
314
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
284
Umeå University: Publications (DiVA)
276
ScienceDirect (Elsevier)
261
Wiley Online Library
251
Defense Technical Information Center: DTIC Technical Reports database
172
SAGE Publications (via Crossref)
161
Canadian Science Publishing (via Crossref)
157
PubMed Central (PMC)
151
DataCite Metadata Store (German National Library of Science and Technology)
126
University of California: eScholarship
121
The University of Queensland: UQ eSpace
113
York University, Toronto: YorkSpace
90
SAGE Publications
89
Uppsala University: Publications (DiVA)
89
LeibnizOpen (The Leibniz Association)
84
Unknown
72
University of the Highlands and Islands: Research Database of UHI
71
ASM Journals (American Society for Microbiology - via Crossref)
68
Utrecht University Repository
63
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
60
Cambridge University Press (via Crossref)
56
Informa
52
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
47
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
47
Aberdeen University Research Archive (AURA)
44
Queen's University Belfast Research Portal
40
University of St Andrews: Digital Research Repository
37
University of California Press (via Crossref)
36
Karlstad University: Publications (DIVA)
33
Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences)
29
University of Washington, Seattle: ResearchWorks
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
PRISM - University of Calgary Digital Repository
27
University of Alaska: ScholarWorks@UA
27
more ...