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. Disponível em: https://am3.ippt.pan.pl/index.php/am/article/view/v49p697. Acesso em: 13 may. 2025.