Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
20
PANGAEA - Data Publisher for Earth & Environmental Science
3
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
2
Directory of Open Access Journals: DOAJ Articles
1
Durham University: Durham Research Online
1
Durham University: Durham e-Theses
1
Ghent University Academic Bibliography
1
Unknown
1