Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
2
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
2
Directory of Open Access Journals: DOAJ Articles
1
Durham University: Durham Research Online
1
Durham University: Durham e-Theses
1
Imperial College London: Spiral
1
Lancaster University: Lancaster Eprints
1
Springer Nature (via Crossref)
1