SOLUTIONS TO A CLASS OF NONLINEAR WAVE EQUATIONS . Far East Journal of Applied Mathematics, [S. l.], v. 118, n. 1, p. 19–38, 2025. DOI: 10.17654/0972096025003. Disponível em: https://pphmjopenaccess.com/fejam/article/view/2753. Acesso em: 5 jan. 2026.