Centar Ivan Dujcev: Naucen Centar za Slavjano-Vizantijski proucvanija "Ivan Dujcev" kam su "Kliment Ohridski/
Ivan Dujcev Research Centre for Slavo-Byzantine Studies at the "Kliment Ohridski"
University of Sofia
- Sofia: χ.ε., 1987-1988.
- Fasc. (1987), (1988)