Content Provider
Cambridge University Press
1,312
ScienceDirect (Elsevier - via Crossref)
216
Springer Nature (via Crossref)
172
ScienceDirect (Elsevier)
91
Informa (via Crossref)
75
Wiley Online Library (via Crossref)
23
Brill (via Crossref)
13
Frontiers (Publisher)
13
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
10
DIAL@UCLouvain (Université catholique de Louvain)
9
DIAL@USL-B (Université Saint-Louis, Bruxelles)
9
IEEE Publications (via Crossref)
9
Oxford University Press (via Crossref)
6
SAGE Publications (via Crossref)
6
Cambridge University Press (via Crossref)
4
Canadian Science Publishing (via Crossref)
4
The BMJ
4
University of Chicago Press (via Crossref)
4
The University of Queensland: UQ eSpace
3
Canadian Science Publishing
2
IEEE Publications
2
Informa
2
SAGE Publications
2
Ghent University Academic Bibliography
1
JSTOR (via Crossref)
1
Johns Hopkins University Press
1
University of Nottingham: Repository@Nottingham
1
Wiley Online Library
1