Iskakov, S.A., and A.O. Tanin. “Professor Bokayev’s Mathematical Olymp: Celebrating the Scholar’s 70th Anniversary”. Bulletin of the Karaganda University. Mathematics Series 121, no. 1 (March 30, 2026): 248–249. Accessed April 4, 2026. https://mts.buketov.edu.kz/mathematics-vestnik/article/view/1220.