Nguyen Duy Tan, Nguyen Thi Thanh Hue, and Vu Thi Thu Huong. “SIMULATION AND EVALUATION ABOUT MAC PROTOCOLS IN WIRELESS SENSOR NETWORK USING NS2”. UTEHY Journal of Applied Science and Technology, Vol. 23, Oct. 2019, pp. 39-45, http://jst.utehy.edu.vn/index.php/jst/article/view/50.