- K. Zh. Nazarova, B. Kh. Turmetov, K. I. Usmanov, “ON THE SOLVABILITY OF SOME BOUNDARY VALUE PROBLEMS
WITH INVOLUTION”, Vestnik of Samara University. Natural Science Series, 26, no. 3, 2020, 7
- Moldir Muratbekova, Valery Karachik, Batirkhan Turmetov, “Bitsadze-Samarsky type problems with double involution”, Bound Value Probl, 2024, no. 1, 2024, 86