Mirosław J. Leszka (b. 1963), full professor at the Department of Byzantine History, Faculty of Philosophy and History, University of Lodz. His scholarly interests include imperial power in the early and middle Byzantine periods, the history of Constantinople, military elites in the 5th–6th centuries and the history of Bulgaria in the 7th–12th centuries. He is the author or co-author 14 books as well as over 200 articles and reviews.Szymon Wierzbiński is an employee of the Lodz University of Technology at the Faculty of Organization and Management (PhD at the University of Lodz in 2013). His main research interests concern military history, with particular emphasis on written sources in the field of Byzantine polemology in the 10th century. He is the author or co-author of three monographs and several scientific articles. He is an associate of the Department of Byzantine History at the University of Lodz, a member of the Waldemar Ceran Research Centre for the History and Culture of the Mediterranean Area and South-East Europe Ceraneum and the Byzantinological Commission of the Polish Historical Society.

Mirosław J. Leszka (b. 1963), full professor at the Department of Byzantine History, Faculty of Philosophy and History, University of Lodz. His scholarly interests include imperial power in the early and middle Byzantine periods, the history of Constantinople, military elites in the 5th–6th centuries and the history of Bulgaria in the 7th–12th centuries. He is the author or co-author 14 books as well as over 200 articles and reviews.Szymon Wierzbiński is an employee of the Lodz University of Technology at the Faculty of Organization and Management (PhD at the University of Lodz in 2013). His main research interests concern military history, with particular emphasis on written sources in the field of Byzantine polemology in the 10th century. He is the author or co-author of three monographs and several scientific articles. He is an associate of the Department of Byzantine History at the University of Lodz, a member of the Waldemar Ceran Research Centre for the History and Culture of the Mediterranean Area and South-East Europe Ceraneum and the Byzantinological Commission of the Polish Historical Society.

Mirosław J. Leszka (b. 1963), full professor at the Department of Byzantine History, Faculty of Philosophy and History, University of Lodz. His scholarly interests include imperial power in the early and middle Byzantine periods, the history of Constantinople, military elites in the 5th–6th centuries and the history of Bulgaria in the 7th–12th centuries. He is the author or co-author 14 books as well as over 200 articles and reviews.Szymon Wierzbiński is an employee of the Lodz University of Technology at the Faculty of Organization and Management (PhD at the University of Lodz in 2013). His main research interests concern military history, with particular emphasis on written sources in the field of Byzantine polemology in the 10th century. He is the author or co-author of three monographs and several scientific articles. He is an associate of the Department of Byzantine History at the University of Lodz, a member of the Waldemar Ceran Research Centre for the History and Culture of the Mediterranean Area and South-East Europe Ceraneum and the Byzantinological Commission of the Polish Historical Society.