BOIKO, V. M.; FUSHCHICH, V. I. Galilei-invariant higher-order equations of burgers and korteweg-de vries types. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 12, p. 1589–1601, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5182. Acesso em: 5 dec. 2025.