MATZ, V.; KREIDL, M.; ŠMÍD, R. Signal-to-Noise Ratio Improvement based on the Discrete Wavelet Transform in Ultrasonic Defectoscopy. Acta Polytechnica, [S. l.], v. 44, n. 4, 2004. DOI: 10.14311/606. Disponível em: https://ojst.is.cvut.cz/ojs/index.php/ap/article/view/606.. Acesso em: 22 may. 2025.