Content Provider
Directory of Open Access Journals: DOAJ Articles
3
University of Tromsø: Munin Open Research Archive
2
DataCite Metadata Store (German National Library of Science and Technology)
1
Frontiers: Figshare
1
MDPI Open Access Publishing
1
Norwegian Institute for Nature Research: Brage NINA
1
Umeå University: Publications (DiVA)
1
Unknown
1
Utrecht University Repository
1
VTechWorks (VirginiaTech)
1
Vrije Universiteit Amsterdam (VU): Research Portal
1