DAO, N. V. On vibration of hanging pendulum in hammer crusher. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 6, n. 1, p. 9–13, 1984. DOI: 10.15625/0866-7136/10401. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/10401. Acesso em: 25 apr. 2024.