SABIRZHANOV, M.T.; KOSHANOV, B.D.; SHYNYBAYEVA, N.M.; KOZHOBEKOVA, P.Zh. Some methods for solving boundary value problems for polyharmonic equations. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 117, n. 1, p. 143–154, 2025. DOI: 10.31489/2025m1/143-154. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/724. Acesso em: 9 jul. 2025.