Mamysheva Elena Petrovna, & Yuyukina Lyudmila Victorovna. (2021). CONTRIBUTION OF K.K. SAMRIN TO THE FORMATION OF THE KHAKASS WRITING SYSTEM (in 1920-1930-s). «Вестник НАН РК», (1), 316–321. извлечено от https://journals.nauka-nanrk.kz/bulletin-science/article/view/436