Content Provider
Directory of Open Access Journals: DOAJ Articles
2
DataCite Metadata Store (German National Library of Science and Technology)
1
Digital.CSIC (Spanish National Research Council)
1
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
1
Lund University Publications (LUP)
1
Universidad de Las Palmas de Gran Canaria: Acceda
1
University of Copenhagen: Research
1
University of Southern Denmark Research Portal
1
VTechWorks (VirginiaTech)
1