Kostova, R. `Bypassing Anchialos`: The Black Sea coast in naval campaigns 11th to 12th c. (I),
Унив. изд. Св. Климент Охридски, 2006, p. 579-596.
Kostova, R. .
`Bypassing Anchialos`: The Black Sea coast in naval campaigns 11th to 12th c. (I).
София: Унив. изд. Св. Климент Охридски, 2006, p. 579-596.
Kostova, R. (2006)
`Bypassing Anchialos`: The Black Sea coast in naval campaigns 11th to 12th c. (I),
София: Унив. изд. Св. Климент Охридски, p. 579-596
Kostova, R.
(2006).
`Bypassing Anchialos`: The Black Sea coast in naval campaigns 11th to 12th c. (I). Тангра : Сб. в чест на 70-год. на акад. Васил Гюзелев. София: Унив. изд. Св. Климент Охридски, p. 579-596.