1. Rock Mechanics Design in Mining and Tunnelling;Bieniawski,1984
2. Design aspects and effectiveness of support systems in different mining conditions;Laubscher;Trans. Inst. Min. Metall.,1986
3. International Society for Rock Mechanics. Rock Characterization, Testing and Monitoring,1981
4. Principles of Mining Geomechanics;Kidybinski,1982
5. Penetrometer measurements of the effect of undermining on the overlying roadways;Szwedzicki,1984