Kar, Rahul, and Ashok Shaw. “Analysis The Barrier of E-Learning in Mathematics Using Type-2 Fuzzy Data”. Journal of Education and Learning Mathematics Research (JELMaR) 1, no. 2 (November 30, 2020): 58-73. Accessed November 23, 2024. https://jelmar.wisnuwardhana.ac.id/index.php/jelmar/article/view/31.