Ukrainian-Russian Relationship in 1917-1918: History Lessons. Bulletin of Kharkiv National University of Internal Affairs, [S. l.], v. 89, n. 2, p. 26–35, 2020. DOI: 10.32631/v.2020.2.02. Disponível em: https://visnyk.univd.edu.ua/index.php/VNUAF/article/view/296. Acesso em: 19 sep. 2025.