Chen, Haidong, Fenghua An, Zhaofeng Wang, and Hongmin Yang. “Layout of Buried Pipe Drainage in the Goaf under Y-Type Ventilation”. Journal of Mines, Metals and Fuels 66, no. 4 (October 20, 2022): 248–252. Accessed April 27, 2024. https://informaticsjournals.com/index.php/jmmf/article/view/31695.