FILIPPENKO, Georgiy Viktorovich. Energy analysis of waves with negative group velocity in cylindrical shell. Computational Continuum Mechanics, Perm, Russia, v. 10, n. 2, p. 187–196, 2017. DOI: 10.7242/1999-6691/2017.10.2.16. Disponível em: https://journal-dev.icmm.ru/index.php/ccm/article/view/CCMv10n2a16. Acesso em: 13 may. 2026.