Chuguj, T.O. 2020. King Danylo Romanovych in Relations Between Rus’ and Poland, 1245–1264. The Journal of V. N. Karazin Kharkiv National University. Series: History. 58 (Dec. 2020), 91-103. DOI:https://doi.org/10.26565/2220-7929-2020-58-06.