A.Sh.Shaldanbayev, A.A.Shaldanbayeva, и B.A.Shaldanbay. 2019. «INVERSE PROBLEM OF THE STURM-LIOUVILLE OPERATOR WITH UNSEPARATED BOUNDARY VALUE CONDITIONS AND SYMMETRIC POTENTIAL». Известия НАН РК. Серия физико-математическая, вып. 4 (август):30-41. https://journals.nauka-nanrk.kz/physics-mathematics/article/view/1673.