A nonexistenee theorem of small periodic traveling wave solutions to the generalized Boussinesq equation. Archives of Mechanics, [S. l.], v. 49, n. 4, p. 697–704, 1997. DOI: 10.24423/aom.1432. Disponível em: https://am.ippt.pan.pl/index.php/am/article/view/v49p697. Acesso em: 23 sep. 2025.