YAN, Z. Fault Feature Extraction for Anchor Bolt Loosening of Escalator Based on EWT and Bispectrum Analysis. CONVERTER, [S. l.], p. 681 - 695, 2021. DOI: 10.17762/converter.219. Disponível em: https://converter-magazine.info/index.php/converter/article/view/219. Acesso em: 29 mar. 2024.