KOSHLYAKOV, V. N. On stability of motion of a symmetric body placed on a vibrating base. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 47, n. 12, p. 1661–1666, 1995. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5559. Acesso em: 5 dec. 2025.