DEBBAL, S M, and F BEREKSI-REGUIG. 2002. “THE FAST FOURIER TRANSFORM AND THE CONTINUOUS WAVELET TRANSFORM ANALYSIS OF THE NORMAL AND PATHOLOGICALS PHONOCARDIOGRAM SIGNALS”. Sciences & Technology. A, Exactes Sciences, no. 17 (June):81-86. https://revue.umc.edu.dz/a/article/view/1791.