Leszka, M., and B. Cecota. “Aleksandru Madgearu, Byzantine Military Organization on the Danube, 10th–12th Centuries, Brill, Leiden-Boston 2013, Ss. 212 [= East Central and Eastern Europe in the Middle Ages, 450–1450, Vol. 22]”. Balcanica Posnaniensia. Acta Et Studia, Vol. 22, no. 2, Mar. 2016, pp. 230-4, doi:10.14746/bp.2015.22.32.