Петровский, В. “‘North Test’: Outline History of Kharkiv Student Construction Brigades in the Tyumen Region.”. The Journal of V. N. Karazin Kharkiv National University. Series History, no. 52 (December 13, 2017): 90-98. Accessed December 22, 2024. https://periodicals.karazin.ua/history/article/view/9910.