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