“The Ukrainian ethnic borders in the Black Sea region in the 1920-1930s Ukrainian social and political thought” (2016) V. N. Karazin Kharkiv National University Bulletin History of Ukraine. Ukrainian Studies: Historical and Philosophical Sciences, 21, pp. 57–65. Available at: https://periodicals.karazin.ua/uahistory/article/view/6054 (Accessed: 25 October 2026).