Content Provider
MTAK: REAL (Library and Information Centre of the Hungarian Academy of Sciences
5
DataCite Metadata Store (German National Library of Science and Technology)
2
University of Debrecen Electronic Archive (DEA)
2
MTAK Folyorat-Szerkesztö Rendszer (Magyar Tudományos Akadémia Könyvtára)
1
University of Debrecen Publishing Platform
1
University of Szeged: SZTE Repository of Papers and Books
1