Content Provider
Directory of Open Access Journals: DOAJ Articles
333
Springer Nature (via Crossref)
137
ScienceDirect (Elsevier - via Crossref)
130
Bioscientifica (via Crossref)
90
Wiley Online Library (via Crossref)
79
Hirsla - Landspítali University Hospital research archive
74
Frontiers (Publisher)
45
Oxford University Press (via Crossref)
37
University of California: eScholarship
35
Oxford University Press
33
Umeå University: Publications (DiVA)
32
DataCite Metadata Store (German National Library of Science and Technology)
30
ScienceDirect (Elsevier)
30
University of Southern Denmark Research Portal
28
Wiley Online Library
27
Unknown
20
Jultika - University of Oulu repository
18
Lund University Publications (LUP)
17
University of Copenhagen: Research
17
Opin vísindi (Iceland)
15
Theses Canada/Thèses Canada (Library and Archives Canada)
15
BioMed Central
13
Bioscientifica
13
University of Tromsø: Munin Open Research Archive
13
CESSDA DC Data Catalogue (Consortium of European Social Science Data Archives)
11
Cambridge University Press
11
HELDA – University of Helsinki Open Repository
11
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
11
National Institute for Health and Welfare (THL), Finland: Julkari
11
Frontiers: Figshare
10
Canadian Science Publishing
9
Imperial College London: Spiral
9
Repositorio de la Universidad César Vallejo
9
The University of Western Ontario: Scholarship@Western
9
University of Alberta: Era - Education and Research Archive
9
Université de Montréal (UdeM): Papyrus
9
Aarhus University: Research
8
Dove Medical Press
8
Karger (via Crossref)
8
MDPI Open Access Publishing
8
PubMed Central (PMC)
8
CDC Stacks (Centers for Disease Control and Prevention)
7
Canadian Science Publishing (via Crossref)
7
Charles University CU Digital repository
7
CyberLeninka (Scientific Electronic Library)
7
The BMJ
6
Theseus.fi (Open Repository of the Universities of Applied Sciences)
6
Zenodo
6
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
5
LIU - Linköping University: Publications (DiVA)
5
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