1. Rock Slope Engineering;Hoek,1977
2. A general stereographic method for determining the possible mode of failure of any tetrahedral rock wedge;Lucas;Int. J. Rock Mech. Min. Sci. & Geomech. Abstr.,1980
3. Location of block release mechanisms in tunnels from geological data and the design of associated support;Croney,1978
4. The use of inclined hemisphere projection methods for the determination of kinematic feasibility, slide direction and volume of rock blocks;Priest;Int. J. Rock Mech. Min. Sci. & Geomech. Abstr.,1980
5. A Geometric Method of Stability Analysis of Rock Mass;Shih,1978