SOSNITSKII, S. P. On the hill stability of motion in the three-body problem. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 60, n. 10, p. 1434–1440, 2008. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3258. Acesso em: 5 dec. 2025.