[1]
Shaldanbayev A. Sh., Akylbaev M. I., Orazov I. и Beysebayeva A. 2019. ABOUT SINGLE OPERATOR METHOD OF SOLUTION OF A SINGULARLY PERTURBED CAUCHY PROBLEM FOR AN ORDINARY DIFFERENTIAL EQUATION ࢔ – ORDER . Известия НАН РК. Серия физико-математическая. 2 (апр. 2019), 17–36.