Yang, Li, and Chuang Chen. “Reliability Evaluation for Colliery Machine Based on Fuzzy Interval Model”. Journal of Mines, Metals and Fuels 69, no. 5 (July 2, 2021): 149–154. Accessed November 7, 2024. https://informaticsjournals.co.in/index.php/jmmf/article/view/28075.