KREIDL, M.; HOUFEK, P. Reducing Ultrasonic Signal Noise by Algorithms based on Wavelet Thresholding. Acta Polytechnica, [S. l.], v. 42, n. 2, 2002. DOI: 10.14311/336. Disponível em: https://ojst.is.cvut.cz/ojs/index.php/ap/article/view/336.. Acesso em: 28 jun. 2025.