Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
4
Directory of Open Access Journals: DOAJ Articles
3
Oxford University Press
2
Unknown
2
Bangor University: Research Portal
1
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
1
LIU - Linköping University: Publications (DiVA)
1
Lund University Publications (LUP)
1
SAGE Publications
1
Springer Nature (via Crossref)
1
University of Bergen: Bergen Open Research Archive (BORA-UiB)
1