Błażej Cecota, "Posledná vojna antiky. Avarský útok na Konštantínopol roku 626 v historických súvislostiach [The Last War of antiquity. The avar siege of constantinople, 626, in historical sources]",  Martin Hurbanič, Prešov 2009 : [recenzja], Studia Ceranea : journal of the Waldemar Ceran Research Centre for the History and Culture of the Mediterranean Area and South-East Europe, 2012, 2, , s. 240-243