1. Function and scope of stress meters in rock mechanics;Hult;Int. J. Rock Mech. Min. Sci.,1966
2. The in situ Determination of the Complete State of Stress in Rock; the Principles of a Proposed Technique;Hayes,1965
3. Stress around a shaft or level excavated in ground with a three-dimensional stress state;Hiramatsu;Mem. Fac. Engng Kyoto Univ.,1962
4. Calculation of the Average Ground Stress Components from Measurements of the Diametrical Deformation of a Drill Hole;Panek,1965
5. Theory of Elasticity;Timoshenko,1951