Voloshchuk, Myroslav. 2021. “Cities of Rus’ in the Military Operations of the Piasts Against the Rurikids (11 – Mid- of the 14 centuries). Part 2”. In City and War, edited by Witold Jarno and Jarosław Kita, 5:57-74. Faces of War. Poland: Lodz University Press. https://doi.org/10.18778/8220-699-9.04.