A.SH. SHALDANBAYEV; M.B. IVANOVA; A.N.URMATOVA; A.A. SHALDANBAYEVA. SPECTRAL DECOMPOSITION OF A FIRST ORDER FUNCTIONAL DIFFERENTIAL OPERATOR. Известия НАН РК. Серия физико-математическая, [S. l.], n. 6, p. 90–105, 2019. Disponível em: http://91834.libg.asia/physics-mathematics/article/view/1696. Acesso em: 14 мар. 2025.