Hongjun, G., Z. Yanhui, Z. Yongping, J. Ming, C. Yiqi, and T. Yifan. “Research and Application of Technology of Gob-Side Entry Retaining by Roof Cutting Pressure Relief in Jiaozishan Coal Mine”. Journal of Mines, Metals and Fuels, vol. 65, no. 7, July 2017, pp. 385-91, doi:10.18311/jmmf/2017/26987.