Л. Б. Кристалинский, “RUSSIAN BOUNDARY SPACE: MODERN PECULIARITIES AND DYNAMICS OF ITS ETHNICAL CHANGES”, The Bulletin of the Volga Region Institute of Administration, vol. 38, no. 5, pp. 18–23, May 2013, Accessed: Nov. 08, 2026. [Online]. Available: https://volga-institute.owebs.ru/article/view/23823