Content Provider
Springer Nature (via Crossref)
11
Directory of Open Access Journals: DOAJ Articles
6
DataCite Metadata Store (German National Library of Science and Technology)
5
eCite UTAS (University of Tasmania)
5
Oxford University Press (via Crossref)
3
Cambridge University Press
2
Informa (via Crossref)
1
Oxford University Press
1
Università degli Studi di Napoli "Parthenope": CINECA IRIS
1
Uppsala University: Publications (DiVA)
1
Wiley Online Library
1