Content Provider
Springer Nature (via Crossref)
1,102
Directory of Open Access Journals: DOAJ Articles
979
Oxford University Press (via Crossref)
388
ScienceDirect (Elsevier - via Crossref)
383
DataCite
342
ScienceDirect (Elsevier)
141
Canadian Science Publishing (via Crossref)
113
ASM Journals (American Society for Microbiology - via Crossref)
112
Wiley Online Library (via Crossref)
109
Informa (via Crossref)
98
Georgetown University: DigitalGeorgetown
96
Oxford University Press
94
Wiley Online Library
64
PubMed Central (PMC)
60
JSTOR (via Crossref)
53
Uppsala University: Publications (DiVA)
34
DataCite Metadata Store (German National Library of Science and Technology)
31
eCite UTAS (University of Tasmania)
31
Lund University Publications (LUP)
30
Opin vísindi (Iceland)
28
University of California: eScholarship
24
ASM Journals (American Society for Microbiology)
22
Canadian Science Publishing
22
Unknown
16
University of Calgary Journal Hosting
15
Informa
14
Umeå University: Publications (DiVA)
14
Hirsla - Landspítali University Hospital research archive
13
University of Alaska: ScholarWorks@UA
13
Cambridge University Press
12
Aberdeen University Research Archive (AURA)
11
University of Washington, Seattle: ResearchWorks
10
HELDA – University of Helsinki Open Repository
9
University of St Andrews: Research Portal
9
Ovid (via Crossref)
8
Dalhousie University: DalSpace Institutional Repository
7
Queen's University Belfast Research Portal
7
The University of Queensland: UQ eSpace
7
University of North Texas: UNT Digital Library
7
Utrecht University Repository
7
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
6
Royal Holloway University of London: Royal Holloway Digital Repository
6
University of Southern Denmark Research Portal
6
Aarhus University: Research
5
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
5
Griffith University: Griffith Research Online
5
PRISM - University of Calgary Digital Repository
5
Padua Research Archive (IRIS - Università degli Studi di Padova)
5
University of Bergen: Bergen Open Research Archive (BORA-UiB)
5
University of St Andrews: Digital Research Repository
5
more ...