Moe, W. W., and N. A. A. Htwe. “Performance Comparison of Collaborative Filtering Prediction Methods on Recommendation System”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 28, no. 1, Feb. 2017, pp. 18-29, https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/2592.