[1]
Marinow, K. 2018. Wild, Haughty and Menacing Highlanders: Bulgarians and Mountains in the Context of Byzantine-Bulgarian Armed Conflicts. The Bulgarian State in 927-969. The Epoch of Tsar Peter I: No. XXXIV. M.J. Leszka, red. Wydawnictwo Uniwersytetu Łódzkiego. 287–301.