Vener Usmanov (2024) “Classification of the Bulgarian-Tatar Epigraphic Monuments and Some Controversial Problems of their Study”, Global Journal of Human-Social Science, 24(F5), pp. 59–79. Available at: https://socialscienceresearch.org/index.php/GJHSS/article/view/104264 (Accessed: 17 March 2025).