- Batirkhan Turmetov, Valery Karachik, “On solvability of some inverse problems for a nonlocal fourth-order parabolic equation with multiple involution”, MATH, 9, no. 3, 2024, 6832
- Batirkhan Turmetov, Valery Karachik, “Construction of Eigenfunctions to One Nonlocal Second-Order Differential Operator with Double Involution”, Axioms, 11, no. 10, 2022, 543
- Valery Karachik, Batirkhan Turmetov, Hongfen Yuan, “Four Boundary Value Problems for a Nonlocal Biharmonic Equation in the Unit Ball”, Mathematics, 10, no. 7, 2022, 1158
- Batirkhan Turmetov, Valeriy Karachik, 2879, SIXTH INTERNATIONAL CONFERENCE OF MATHEMATICAL SCIENCES (ICMS 2022), 2023, 040005
- Kairat I. Usmanov, Batirkhan Kh. Turmetov, Kulzina Zh. Nazarova, “On Unique Solvability of a Multipoint Boundary Value Problem for Systems of Integro-Differential Equations with Involution”, Symmetry, 14, no. 8, 2022, 1626
- Moldir Muratbekova, Bakhtiyar Kadirkulov, Maira Koshanova, Batirkhan Turmetov, “On Solvability of Some Inverse Problems for a Fractional Parabolic Equation with a Nonlocal Biharmonic Operator”, Fractal Fract, 7, no. 5, 2023, 404
- B. Kh. Turmetov, V. V. Karachik, “Solvability of nonlocal Dirichlet problem for generalized Helmholtz equation in a unit ball”, Complex Variables and Elliptic Equations, 68, no. 7, 2023, 1204
- Moldir Muratbekova, Valery Karachik, Batirkhan Turmetov, “Bitsadze-Samarsky type problems with double involution”, Bound Value Probl, 2024, no. 1, 2024, 86
- B. Kh. Turmetov, K. Zh. Nazarova, K. I. Usmanov, “On Some Problems of Bitsadze–Samarsky Type for the Poisson Equation”, Lobachevskii J Math, 45, no. 7, 2024, 3444
- V.V. Karachik, “THE BIHARMONIC NEUMANN PROBLEM WITH DOUBLE INVOLUTION”, MMPh, 16, no. 3, 2024, 18