Li, Li, Qiang Yue, and Li Shaohong. “Evaluation of Soil Erosion Risks in a Coal Mine Based on an Integrated Extension-Cloud Model”. Journal of Mines, Metals and Fuels 66, no. 1 (June 13, 2021): 8–12. Accessed April 24, 2024. https://informaticsjournals.com/index.php/jmmf/article/view/27970.