NURGABYL, D.; SEITOVA, T. INTRODUCING METHOD OF GENERALIZED DERIVATIVE CONCEPT IN MATHEMATICS. Известия НАН РК. Серия физико-математическая, [S. l.], n. 2, p. 120–126, 2020. Disponível em: http://91834.libg.asia/physics-mathematics/article/view/414. Acesso em: 22 фев. 2025.