IVANOV, I.A.; YESBAYEV, A.N.; YESSENBAYEVA, G.A.; RAMAZANOV, M.I. On the solution of boundary value problems by the spectral element method. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 79, n. 3, p. 50–54, 2015. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/47. Acesso em: 10 jul. 2025.