KAR, Rahul; SHAW, Ashok Kumar. Analysis the Barrier of E-Learning in Mathematics Using Type-2 Fuzzy Data. Journal of Education and Learning Mathematics Research (JELMaR), [S. l.], v. 1, n. 2, p. 58–73, 2020. DOI: 10.37303/jelmar.v1i2.73. Disponível em: https://jelmar.wisnuwardhana.ac.id/index.php/jelmar/article/view/73. Acesso em: 25 aug. 2026.