TRI, Tran Duong. Some results for analyzing time-dependent frequencies of vibration signals. <b>Vietnam Journal of Mechanics</b>, Hanoi, Vietnam, v. 24, n. 1, p. 51–64, 2002. DOI: 10.15625/0866-7136/24/1/6609. Disponível em: https://vjmech.vast.vn/vjmech/article/view/6609. Acesso em: 8 nov. 2025.