Zegarra Rodriguez, Demostenes, et al. “ASSESSMENT OF TRANSMITTED SPEECH SIGNAL DEGRADATIONS IN RICIAN AND RAYLEIGH CHANNEL MODELS”. INFOCOMP Journal of Computer Science, vol. 17, no. 2, Dec. 2018, pp. 23-31, http://177.105.60.18/index.php/infocomp/article/view/572.