Content Provider
Informa (via Crossref)
11
ScienceDirect (Elsevier - via Crossref)
3
University of Calgary Journal Hosting
3
Cambridge University Press
2
DataCite Metadata Store (German National Library of Science and Technology)
2
Canadian Science Publishing
1
Canadian Science Publishing (via Crossref)
1
Informa
1
Springer Nature (via Crossref)
1
University of Freiburg: FreiDok
1
University of Glasgow: Enlighten - Publications
1
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
1
Wiley Online Library (via Crossref)
1
Zenodo
1