Hassiotis, Ioannis. 1983. “George Heracleus Basilicos, a Greek Pretender to a Balkan Principality (End of the XVI – Beginning of the XVII Century)”. Balcanica - Annual of the Institute for Balkan Studies, no. XIII-XIV (December):86-96. https://balcanica.rs/index.php/journal/article/view/1166.