Потоцький, В. (2016) “Polish Captain Andrzej Okun’s Role in the Military Campaigns Against the Ukrainian Cossacks (1648 – beginning of the 50s of the ХVII century)”, V. N. Karazin Kharkiv National University Bulletin ‘History of Ukraine. Ukrainian Studies: Historical and Philosophical Sciences’, 210, pp. 21-29. Available at: https://periodicals.karazin.ua/uahistory/article/view/6049 (Accessed: 26December2024).