Islam, Md Azharul, and Md Sahadat Hossain. “Optimizing the Wash Time of the Washing Machine Using Several Types of Fuzzy Numbers”. Journal of Bangladesh Academy of Sciences 45, no. 1 (July 15, 2021): 105–116. Accessed November 30, 2021. https://banglajol.info/index.php/JBAS/article/view/54432.