Bobodzhanova, M., Kalimbetov, B. and Bekmakhanbet, G. (2021) “Asymptotics solutions of a singularly perturbed integro-differential fractional order derivative equation with rapidly oscillating coefficients”, Bulletin of the Karaganda University. Mathematics Series, 104(4), pp. 56–67. doi: 10.31489/2021m4/56-67.