Ivanov I, Yesbayev A, Yessenbayeva G, Ramazanov M. On the solution of boundary value problems by the spectral element method. M [Internet]. 2015 Sep. 29 [cited 2025 Jul. 10];79(3):50-4. Available from: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/47