A.Sh. Shaldanbayev, A.A. Shaldanbayeva, A.Zh. Beisebayeva, и B.A. Shaldanbay. «INVERSE PROBLEM OF STURM-LIOUVILLE OPERATOR WITH NON-SEPARATED BOUNDARY VALUE CONDITIONS AND SYMMETRIC POTENTIAL». Physico-mathematical series, no. 6 (декабрь 12, 2019): 52–62. просмотрено декабрь 4, 2024. https://journals.nauka-nanrk.kz/physics-mathematics/article/view/1693.