KANGUZHIN, B. Propagation of Nonsmooth Waves under Singular Perturbations of the Wave Equation. Eurasian Mathematical Journal, [S. l.], v. 13, n. 3, p. 41–50, 2022. Disponível em: https://emj.enu.kz/index.php/main/article/view/263. Acesso em: 19 nov. 2024.