Content Provider
ScienceDirect (Elsevier - via Crossref)
17
Cambridge University Press
14
ScienceDirect (Elsevier)
9
eCite UTAS (University of Tasmania)
9
Springer Nature (via Crossref)
8
Directory of Open Access Journals: DOAJ Articles
5
University of California: eScholarship
5
Australian National University: ANU Digital Collections
2
Columbia University: Academic Commons
2
DataCite Metadata Store (German National Library of Science and Technology)
2
University of the Highlands and Islands: Research Database of UHI
2
Informa (via Crossref)
1
Institutional Repository of Leibniz Universität Hannover
1
Old Dominion University: ODU Digital Commons
1
Università del Salento: CINECA IRIS
1