Rahmad Syah, M K M Nasution, Ismail Husein, Marischa Elveny. “Optimization Tree Based Inference to Customer Behaviors in Dynamic Control System”. International Journal of Advanced Science and Technology, Vol. 29, no. 08, June 2020, pp. 1102 -09, http://sersc.org/journals/index.php/IJAST/article/view/19801.