Sartabanov Z, Zhumagaziyev A, Abdikalikova G. Multiperiodic solution of linear hyperbolic in the narrow sense system with constant coefficients. M [Internet]. 2020 June 30 [cited 2026 Oct. 27];2(98):125-40. Available from: https://mts.buketov.edu.kz/mathematics-vestnik/article/view/349