SAMOILENKO, V. G.; SAMOILENKO, Yu. I. Asymptotic solutions of the Cauchy problem for the singularly perturbed Korteweg-de Vries equation with variable coefficients. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 59, n. 1, p. 122–132, 2007. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3295. Acesso em: 6 dec. 2025.