Rasulov, M., N. Aliyev, and B. Sinsoysal. “Investigation of the Solution of a Boundary Value Problem With Variable Coefficients Whose Principal Part Is the Cauchy–Riemann Equation”. Bulletin of the Karaganda University. Mathematics Series 120, no. 4 (December 30, 2025): 155–162. Accessed January 11, 2026. https://mts.buketov.edu.kz/mathematics-vestnik/article/view/1163.