@ARTICLE{Liu_Xiling_Safety_2015, author={Liu, Xiling and Li, Xibing and Gong, Fengqiang and Liu, Kewei}, number={No 2}, journal={Archives of Mining Sciences}, howpublished={online}, year={2015}, publisher={Committee of Mining PAS}, title={Safety Problem Of Cavity Under Open Pit Bench}, URL={http://journals.pan.pl/Content/93895/PDF/10267-Volume60_Issue2-09_paper.pdf}, doi={10.1515/amsc-2015-0037}, }