Bifurcation of solutions of an impulsive boundary-value problem. Neliniini Kolyvannya, [S. l.], v. 11, n. 1, p. 21–31, 2008. Disponível em: https://twinhead.imath.kiev.ua/index.php/nosc/article/view/459. Acesso em: 21 jan. 2026.