Rudyakov А.Н., and Rudyakov Л.А. “Geophonology of the Russian Language As a Part of Georusistic”. Bulletin of L.N. Gumilyov Eurasian National University. PHILOLOGY Series 137, no. 4 (December 30, 2021): 49–59. Accessed July 22, 2024. https://bulphil.enu.kz/index.php/main/article/view/229.