SHALDANBAYEV A. SH.; AKYLBAEV M. I.; ORAZOV I.; BEYSEBAYEVA A. ABOUT SINGLE OPERATOR METHOD OF SOLUTION OF A SINGULARLY PERTURBED CAUCHY PROBLEM FOR AN ORDINARY DIFFERENTIAL EQUATION ࢔ – ORDER . Известия НАН РК. Серия физико-математическая, [S. l.], n. 2, p. 17–36, 2019. Disponível em: http://89.250.84.46/physics-mathematics/article/view/1169. Acesso em: 23 дек. 2024.