Dzhumabaev, D.S., and S.M. Temesheva. “Bounder Solution on a Strip to a System of Nonlinear Hyperbolic Equations With Mixed Derivatives”. Bulletin of the Karaganda University. Mathematics Series 84, no. 4 (December 30, 2016): 35–45. Accessed August 23, 2025. http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/120.