Thing Ng, Wen, Chee Siong Teh, and Chwen Jen Chen. “Design and Development of Topic-Based Students’ Knowledge Modelling System Using Fuzzy Set Theory and Visual Analytics”. International Journal of Engineering & Technology 7, no. 4.31 (December 9, 2018): 87–94. Accessed November 22, 2024. https://sciencepubco.com/index.php/ijet/article/view/23347.