ҚЫТАЙБЕКОВ, Е. Dirichlet problem for three-dimensional hyperbolic-parabolic equations with type and order extinction. Journal of Mathematics, Mechanics and Computer Science, [S. l.], v. 88, n. 1, p. 28–34, 2017. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/326. Acesso em: 1 sep. 2024.