Otelbay Г. (2019) “«Esep quraly» («Мath textbook») of Mirzhakup Dulatuly: the meaning and status of forgotten terms”, Bulletin of L.N. Gumilyov Eurasian National University. PHILOLOGY Series, 127(2), pp. 193–200. doi: 10.32523/2616-678X-2019-127-2-193-200.