1. Determining rock mass deformability: experience from case histories;Bieniawski;International Journal of Rock Mechanics and Mining Sciences,1978
2. Deformational response in discontinua;Chappell;International Journal Rock Mechanics Sciences & Geomechanics,1979
3. Modeling of tunnel excavation using a hybrid DEM/BEM method;Chen;Computer-Aided Civil and Infrastructure Engineering,2002
4. Chern, J.C., Chang, Y.L., Lee, K.J., Yu, C.W., 1997. Correlation study on the deformation modulus and rating of rock mass. Sinotech Engineering Consultants, Inc., Taipei, Taiwan.
5. Three-dimensional back-analysis method for the mechanical parameters of the new ground ahead of a tunnel face;Hisatake;Tunnelling and Underground Space Technology,2008