ISMAIL, A. I.; SPERLING, L.; AMER, T. S. On the Existence of Periodic Solutions of a Gyrostat Similar to Lagrange’s Gyroscope. Technische Mechanik - European Journal of Engineering Mechanics, [S. l.], v. 20, n. 4, p. 295–304, 2019. Disponível em: https://journals.ub.ovgu.de/index.php/techmech/article/view/1105. Acesso em: 3 may. 2024.