ZHIENBAEVA, Gaukhar. The Dirichlet problem for the wave equation in a spherical domain. «ACTA NUUz», [S. l.], v. 2, n. 2.1, p. 143–147, 2026. Disponível em: http://journals.nuu.uz/index.php/actanuuz/article/view/11818. Acesso em: 30 apr. 2026.