ARZIKULOV, Z.O.; ERGASHEV, T.G. Particular solutions of the multidimensional singular ultrahyperbolic equation generalizing the telegraph and Helmholtz equations. Bulletin of the Karaganda University. Mathematics Series, [S. l.], v. 118, n. 2, p. 16–27, 2025. DOI: 10.31489/2025m2/16-27. Disponível em: https://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/706. Acesso em: 10 jul. 2025.