Hyperbolic boundary-value problem for a piecewise homogeneous solid cylinder. Neliniini Kolyvannya, [S. l.], v. 21, n. 4, p. 485–495, 2018. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/925. Acesso em: 6 dec. 2025.