TRI, T. D. Some results for analyzing time-dependent frequencies of vibration signals. Vietnam Journal of Mechanics, Hanoi, Vietnam, v. 24, n. 1, p. 51–64, 2002. DOI: 10.15625/0866-7136/24/1/6609. Disponível em: https://vjs.ac.vn/index.php/vjmech/article/view/6609. Acesso em: 29 mar. 2024.