Content Provider
Cambridge University Press
500
ScienceDirect (Elsevier - via Crossref)
158
JSTOR (via Crossref)
145
Informa (via Crossref)
67
SAGE Publications
66
Informa
42
SAGE Publications (via Crossref)
39
Utrecht University Repository
37
Wiley Online Library
36
University of Liège: ORBi (Open Repository and Bibliography)
29
ScienceDirect (Elsevier)
28
Wiley Online Library (via Crossref)
25
Springer Nature (via Crossref)
18
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
17
Cambridge University Press (via Crossref)
10
University of St Andrews: Digital Research Repository
8
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
6
JSTOR
6
Aberdeen University Research Archive (AURA)
3
Queen's University Belfast Research Portal
3
University of Nottingham: Repository@Nottingham
3
University of Toronto Press (U Toronto Press - via Crossref)
3
Caltech Authors (California Institute of Technology)
1
IOP Publishing
1
Technical University of Denmark: DTU Orbit
1