Content Provider
University of Calgary Journal Hosting
16
Directory of Open Access Journals: DOAJ Articles
12
Unknown
5
Canadian Science Publishing (via Crossref)
4
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
4
DataCite Metadata Store (German National Library of Science and Technology)
3
Niedersächsisches Online-Archiv NOA
3
Cambridge University Press
2
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
2
University of St Andrews: Research Portal
2
Akademicka Platforma Czasopism
1
Akademicka Platforma Czasopism (APCZ)
1
De Gruyter (via Crossref)
1
Durham University: Durham Research Online
1
Ghent University Academic Bibliography
1
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
1
Sciendo (de Gruyter - via CrossRef)
1
The University of Arizona: UA Campus Repository
1
University of Bristol: Bristol Research
1
University of Glasgow: Enlighten - Publications
1
University of St Andrews: Digital Research Repository
1
Uppsala University: Publications (DiVA)
1
Utrecht University Repository
1