Content Provider
Cambridge University Press
9,735
Informa (via Crossref)
3,640
Canadian Science Publishing (via Crossref)
2,013
ScienceDirect (Elsevier - via Crossref)
1,801
Springer Nature (via Crossref)
1,142
ScienceDirect (Elsevier)
1,053
Canadian Science Publishing
839
Informa
659
Frontiers (Publisher)
543
JSTOR (via Crossref)
303
Wiley Online Library (via Crossref)
257
IEEE Publications
243
IEEE Publications (via Crossref)
240
Wiley Online Library
224
The Royal Society (via Crossref)
145
Cambridge University Press (via Crossref)
123
Brill (via Crossref)
105
The BMJ
96
SAGE Publications (via Crossref)
81
JSTOR
79
De Gruyter (via Crossref)
67
SAGE Publications
59
University of Chicago Press (via Crossref)
50
Oxford University Press (via Crossref)
47
Munipress - Masaryk University Press
40
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
29
University of Liège: ORBi (Open Repository and Bibliography)
26
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
22
SPIE Publications (via Crossref)
20
Sciendo (de Gruyter - via CrossRef)
20
Caltech Authors (California Institute of Technology)
17
DIAL@USL-B (Université Saint-Louis, Bruxelles)
17
DIAL@UCLouvain (Université catholique de Louvain)
16
Johns Hopkins University Press
16
Johns Hopkins University Press (via Crossref)
15
Oxford University Press
15
Scientific Research Publishing (SCIRP Open Access - via Crossref)
13
Aberdeen University Research Archive (AURA)
10
Scandinavian University Press (via Crossref)
10
The University of Queensland: UQ eSpace
10
The BMJ (via Crossref)
9
UCL Press (via Crossref)
9
Schweizerbart Science Publishers
8
ACS Publications (via Crossref)
7
De Gruyter
7
Ghent University Academic Bibliography
7
Schweizerbart Science Publishers (via Crossref)
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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