1. Design of surface and near-surface construction in rock;Deere,1967
2. Deformations in rock mechanics;Duffaut,1968
3. Determination of the in-situ modulus of deformation of rock;A.S.T.M.,1970
4. A new method for the determination of deformability of rock masses;Rocha,1970
5. Rock mass behavior—determinion and application in engineering practice;Müller,1974