1. X.H. ZhOU, L. H GUO, H. LIANG, et al. The Chinese Journal of Geological Hazard and Control, Vol. 23(1)(2012): p.83.
2. G.Q. SHI, D. M WANG, Z. L XI. Coal Science and Technology, Vol. 37(6)(2009): p.76.
3. Z. Y HAO, J. R WANG, Z. S KANG, et al. Journal of Disaster Prevention and Mitigation Engineering, Vol. 31(3)(2011): p.323.
4. Z. X LI. China Safety Science Journal, Vol. 13(5)(2003): p.3.
5. Z. X LI, D. Y LU. S. Y QING. China Safety Science Journal, Vol. 24(5)(1999): p.494.