Content Provider
Cambridge University Press
1,476
ScienceDirect (Elsevier - via Crossref)
216
Springer Nature (via Crossref)
172
Informa (via Crossref)
102
ScienceDirect (Elsevier)
91
Wiley Online Library (via Crossref)
39
Frontiers (Publisher)
35
IEEE Publications (via Crossref)
15
Brill (via Crossref)
13
Informa
12
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
11
IEEE Publications
10
DIAL@UCLouvain (Université catholique de Louvain)
9
DIAL@USL-B (Université Saint-Louis, Bruxelles)
9
Oxford University Press (via Crossref)
9
SAGE Publications (via Crossref)
9
Canadian Science Publishing (via Crossref)
7
Cambridge University Press (via Crossref)
6
JSTOR (via Crossref)
6
The BMJ
6
SAGE Publications
5
The Royal Society (via Crossref)
5
Wiley Online Library
5
University of Chicago Press (via Crossref)
4
The University of Queensland: UQ eSpace
3
Canadian Science Publishing
2
Oxford University Press
2
Ghent University Academic Bibliography
1
Johns Hopkins University Press
1
University of Hull: Repository@Hull
1
University of Nottingham: Repository@Nottingham
1
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
1