Content Provider
Directory of Open Access Journals: DOAJ Articles
11
University of Southern Denmark Research Portal
3
Aalborg University's Research Portal
2
Aarhus University: Research
2
MDPI Open Access Publishing
2
The University of Dublin, Trinity College: TARA (Trinity's Access to Research Archive)
2
University of Calgary Journal Hosting
2
DataCite Metadata Store (German National Library of Science and Technology)
1
University of Copenhagen: Research
1
Unknown
1
Érudit.org (Université Montréal)
1