Title: T͡Sentralizŭm i regionalizŭn v rannosrednovekovna Bŭlgarii͡a : (krai͡a na VII- nachaloto na XI v.) /
Authors: Nikolov, Georgi N.
Publisher: Akademichno izdatelstvo "Marin Drinov",
Year: 2005
Subjects: Bulgarians Politics and government.; Bulgaria History