Ham, Nguyen Duy, Võ Đình Bảy, Nguyen Thi Hong Minh, and Tzung-Pei Hong. “MBiS: An Efficient Method for Mining Frequent Weighted Utility Itemsets from Quantitative Databases”. Journal of Computer Science and Cybernetics 31, no. 1 (March 16, 2015): 17–30. Accessed October 3, 2022. https://vjs.ac.vn/index.php/jcc/article/view/5154.