A.Sh.Shaldanbayev, M.I.Akylbayev, A.A.Shaldanbayeva, A.Zh.Beisebayeva. ON THE SPECTRAL PROPERTIES OF A WAVE OPERATOR PERTURBED BY A LOWER-ORDER TERM. СФМН [Интернет]. 10 август 2019 г. [цитируется по 2 май 2024 г.];(4):22-9. доступно на: https://journals.nauka-nanrk.kz/physics-mathematics/article/view/1672