Content Provider
University of Piraeus: Dione
8
DataCite Metadata Store (German National Library of Science and Technology)
4
Ιδρυματικό Αποθετήριο HELLANICUS
4
Pergamos - Library and Information Center of National and Kapodistrian University of Athens
3
Unknown
2
EKT ePublishing (National Documentation Centre, Greece)
1
National Archive of PhD Theses (National Documentation Centre Greece)
1