1. Underground excavations in rock;Hoek,1982
2. A geomechanics classification system for the rating of rock mass in a mine design;Laubscher;J S Afr Inst Min Metall,1990
3. N-Fold, pseudo-3D Displacement discontinuity based program for analysis of stress and displacement around underground excavations, Operating manual supplied by Golder Associates (UK) to Hindustan Zinc Ltd., Zawarmines.
4. PHASES, 2D hybrid FE/BE program for calculating stresses and estimating support around underground excavations, Operating manual supplied by Golder Associates (UK) to Hindustan Zinc Ltd., Zawarmines.
5. Castro LAM, McCreath, Kaiser PK. Rock mass strength determination from breakouts in tunnels and boreholes. Proceedings of the 8th International Congress on Rock Mechanics, Tokyo, 1995, pp. 531–6.