DANIELEWSKI, M.; SAPA, L. NONLINEAR KLEIN-GORDON EQUATION IN CAUCHY-NAVIER ELASTIC SOLID. Cherkasy University Bulletin: Physical and Mathematical Sciences, [S. l.], v. 1, n. 1, 2018. Disponível em: https://phys-ejournal.cdu.edu.ua/article/view/2329. Acesso em: 15 jun. 2026.