BODNARCHUK, S. V.; KULIK, V. L. On parameter dependence of bounded invariant manifolds of autonomous systems of differential equations. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 6, p. 747–752, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5275. Acesso em: 5 dec. 2025.