Shaldanbayev A.Sh, A.A. Shaldanbayeva, и B.A. Shaldanbay. «INVERSE PROBLEM OF A STURM-LIOUVILLE OPERATOR WITH NON-SEPARATED BOUNDARY VALUE CONDITIONS AND SYMMETRIC POTENTIAL». Известия НАН РК. Серия физико-математическая, no. 5 (октябрь 10, 2019): 59–69. просмотрено май 1, 2024. https://journals.nauka-nanrk.kz/physics-mathematics/article/view/1659.