Content Provider
Informa (via Crossref)
14
ScienceDirect (Elsevier - via Crossref)
14
Canadian Science Publishing
13
Wiley Online Library (via Crossref)
13
Wiley Online Library
11
Canadian Science Publishing (via Crossref)
10
Oxford University Press (via Crossref)
8
Cambridge University Press (via Crossref)
7
ScienceDirect (Elsevier)
7
Cambridge University Press
6
Springer Nature (via Crossref)
5
Informa
2
Oxford University Press
2
JSTOR
1
University of Chicago Press
1