1. Numerical modeling of discontinua;Cundall,1993
2. A generalised distinct element program for modelling jointed rock;Cundall,1980
3. Two dimensional discontinuous deformation analysis;Shi;Int. J. Numer. Analyt. Meth. Geomech.,1985
4. Support of Underground Excavations in Hard Rock;Hoek,1995
5. Rock engineering;Nilsen,1993