Curta, Florin, 1965-. Southeastern Europe in the Middle Ages, 500 - 1250. - Cambridge [u.a.] : Cambridge Univ. Press. - 2006 [Rezension] - Petkov, Kiril (. Speculum. - Chicago, Ill. : University of Chicago Press, 1926-. - ISSN 0038-7134 82, 2007)