1. Analysis of instability of coal pillar and stiff roof system;He;J Chin Coal Soc,2007
2. Instability analysis of coal pillar and roof system under non-uniformly distributed;He;J Archit Civil Eng,2008
3. Study on catastrophic theory model of instability of coal pillar and roof system;Liu;Chin Mining Mag,2008
4. Study on catastrophe characteristics of the instability of coal pillars;Wang;J Chin Univ Mining Technol,2007
5. Analysis on damaged width of coal pillar in strip extraction;Wang;Chin J Geotech Eng,2006