Content Provider
ScienceDirect (Elsevier - via Crossref)
95
Wiley Online Library
56
Wiley Online Library (via Crossref)
54
ScienceDirect (Elsevier)
38
University of California: eScholarship
36
Oxford University Press (via Crossref)
34
Directory of Open Access Journals: DOAJ Articles
33
Frontiers (Publisher)
30
Oxford University Press
24
University of Calgary Journal Hosting
14
Springer Nature (via Crossref)
13
Old Dominion University: ODU Digital Commons
9
Informa (via Crossref)
8
eCite UTAS (University of Tasmania)
6
Stockholm University Press (via Crossref)
5
University of California Press
5
University of California Press (via Crossref)
4
Cambridge University Press
2
Cambridge University Press (via Crossref)
2
Informa
2
University of Chicago Press
2
University of Chicago Press (via Crossref)
2
Columbia University: Academic Commons
1
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository
1
Naval Postgraduate School: Calhoun
1
Opin vĂsindi (Iceland)
1
Queen's University Belfast Research Portal
1
Stockholm University Press
1
University of the Highlands and Islands: Research Database of UHI
1
Utrecht University Repository
1
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
1