1. Measurement of rock deformability in boreholes;Goodman,1972
2. Determining rock mass deformability: experience from case histories;Bieniawski;Int. J. Rock Mech. Min. Sci. & Geomech. Abstr.,1978
3. Introduction to Rock Mechanics;Goodman,1989
4. Rock characterization testing and monitoring;Brown,1980
5. A note on the Goodman jack;Swolfs;Rock Mech.,1982