Content Provider
Cambridge University Press
9,741
Informa (via Crossref)
3,480
Canadian Science Publishing (via Crossref)
1,866
ScienceDirect (Elsevier - via Crossref)
1,801
Springer Nature (via Crossref)
1,142
ScienceDirect (Elsevier)
1,053
Canadian Science Publishing
992
Informa
820
Frontiers (Publisher)
547
JSTOR (via Crossref)
295
IEEE Publications
266
Wiley Online Library
257
Wiley Online Library (via Crossref)
249
IEEE Publications (via Crossref)
218
The Royal Society (via Crossref)
145
Cambridge University Press (via Crossref)
118
Brill (via Crossref)
102
The BMJ
96
JSTOR
89
SAGE Publications (via Crossref)
73
SAGE Publications
67
De Gruyter (via Crossref)
62
University of Chicago Press (via Crossref)
50
Oxford University Press (via Crossref)
46
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
42
Munipress - Masaryk University Press
42
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
30
University of Liège: ORBi (Open Repository and Bibliography)
26
Sciendo (de Gruyter - via CrossRef)
20
SPIE Publications (via Crossref)
19
Caltech Authors (California Institute of Technology)
17
DIAL@UCLouvain (Université catholique de Louvain)
17
DIAL@USL-B (Université Saint-Louis, Bruxelles)
17
Johns Hopkins University Press
17
Oxford University Press
16
Johns Hopkins University Press (via Crossref)
15
De Gruyter
13
Scientific Research Publishing (SCIRP Open Access - via Crossref)
13
Aberdeen University Research Archive (AURA)
10
Scandinavian University Press (via Crossref)
10
Schweizerbart Science Publishers
10
The University of Queensland: UQ eSpace
10
The BMJ (via Crossref)
9
UCL Press (via Crossref)
9
ACS Publications (via Crossref)
7
Ghent University Academic Bibliography
7
Utrecht University Repository
7
Longwoods Publishing (via Crossref)
6
Université de Lausanne (UNIL): Serval - Serveur académique lausannois
6
ACM Publications (Association for Computing Machinery - via Crossref)
5
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