Orumbayeva N, Assanova A, Keldibekova A. On an Algorithm of Finding an Approximate Solution of a Periodic Problem for a Third-Order Differential Equation. EMJ [Internet]. 2022 Jan. 1 [cited 2024 Oct. 5];13(1):69-85. Available from: https://emj.enu.kz/index.php/main/article/view/250