SHALDANBAYEV A.SH.; Shaldanbayeva A.А.; SHALDANBAY B.A. ON PROJECTIONAL ORTHOGONAL BASIS OF A LINEAR NON-SELF -ADJOINT OPERATOR. Известия НАН РК. Серия физико-математическая, [S. l.], n. 2, p. 79–89, 2019. Disponível em: https://journals.nauka-nanrk.kz/physics-mathematics/article/view/1182. Acesso em: 3 май. 2024.