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Baltabek KANGUZHİN, Karlygash DOSMAGULOVA, “Well-posed problems for the Laplace-Beltrami operator on a punctured two-dimensional sphere”, Advances in the Theory of Nonlinear Analysis and its Application, 7:2 (2023), 428
Kanguzhin B.E., Tulenov K.S., “Correctness of the Definition of the Laplace Operator With Delta-Like Potentials”, Complex Var. Elliptic Equ., 67:4 (2022), 898–920
Baltabek Kanguzhin, Yerkebulan Akanbay, Zhalgas Kaiyrbek, “On the Uniqueness of the Recovery of the Domain of the Perturbed Laplace Operator”, Lobachevskii J Math, 43:6 (2022), 1532
B. Kanguzhin, Z. Fazullin, “On the localization of the spectrum of some perturbations of a two-dimensional harmonic oscillator”, Complex Var. Elliptic Equ., 66:6-7, SI (2021), 1194–1208
Г. Е. Абдуахитова, Б. Е. Кангужин, “Корректное определение эллиптических операторов второго порядка с точечными взаимодействиями и их резольвенты”, Матем. тр., 23:1 (2020), 3–15
Kanguzhin B.E., Tulenov K.S., “Singular Perturbations of Laplace Operator and Their Resolvents”, Complex Var. Elliptic Equ., 65:9 (2020), 1433–1444
G. E. Abduakhitova, B. E. Kanguzhin, “The Correct Definition of Second-Order Elliptic Operators with Point Interactions and their Resolvents”, Sib. Adv. Math., 30:3 (2020), 153
B. E. Kanguzhin, “Changes in a finite part of the spectrum of the Laplace operator under delta-like perturbations”, Differ. Equ., 55:10 (2019), 1328–1335
B. Bekbolat, B. Kanguzhin, N. Tokmagambetov, “To the question of a multipoint mixed boundary value problem for a wave equation”, News Natl. Acad. Sci. Rep. Kazakhstan-Ser. Phys.-Math., 4:326 (2019), 76–82