Кристалинский, Л.Б. (2013) “RUSSIAN BOUNDARY SPACE: MODERN PECULIARITIES AND DYNAMICS OF ITS ETHNICAL CHANGES”, The Bulletin of the Volga Region Institute of Administration, 38(5), pp. 18–23. Available at: https://volga-institute.owebs.ru/article/view/23823 (Accessed: 8 November 2026).