1. Numerical study of failure mechanisms and control techniques for a gob-side yield pillar in the Sijiazhuang coal mine, China;Bai;Rock Mechanics and Rock Engineering,2019
2. Barczak, T. M., Chase, F. E., & Organiscak, J. A. (1993). Longwall face stability: An evaluation of face sloughage. Report of Investigations/1993 (No. PB-94-125838/XAB; BUMINES-RI-9486). Bureau of Mines, Pittsburgh, PA (United States). Pittsburgh Research Center.
3. Engineering classification of rock masses for the design of tunnel support;Barton;Rock Mechanics,1974
4. Engineering classification of jointed rock masses;Bieniawski;Civil Engineering= Siviele Ingenieurswese,1973
5. Bieniawski, Z. T. (1992). A method revisited: Coal pillar strength formula based on field investigations. In Proceedings of the workshop on coal pillar mechanics and design. Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, IC (Vol. 9315, pp. 158–165).