Lyman, S. I. “International Relations of Medieval Europe in Works of D. I. Kachenovskiy (1827–1872)”. The Journal of V. N. Karazin Kharkiv National University. Series: History, no. 56 (December 20, 2019): 67-77. Accessed April 26, 2024. https://periodicals.karazin.ua/history/article/view/15361.