Nguyen Quoc Trung, and Pham Ngoc Thang. “DESIGN DEMONSTRATION M-Ary CHAOTIC PULSE POSITION MODULATOR AND DEMODULATOR”. UTEHY Journal of Applied Science and Technology, Vol. 17, Apr. 2018, pp. 50-56, http://tapchi.utehy.edu.vn/index.php/jst/article/view/128.