Optimal System, Group Invariant Solutions and Conservation Laws of the Non-linear Elastic Wave Equation and Damped Elastic Wave Equation. Journal of Prime Research in Mathematics, [S. l.], v. 19, n. 1, p. 55 – 72, 2023. Disponível em: https://jprm.sms.edu.pk/index.php/jprm/article/view/208. Acesso em: 30 jul. 2025.