1. Estimating the strength of rock materials;Bieniawski;Is. Jl S. Afr. Inst. Min. Metall.,1974
2. Correlation of force-displacement data with physical properties of rock for percussion drilling systems;Reichmuth,1963
3. Point load testing of brittle materials to determine tensile strength and relative brittleness;Reichmuth,1968
4. The point load strength test;Broch;Int. J. Rock Mech. Min. Sci.,1972
5. Prediction of compressive strength of rock from other rock properties;D'Andrea;U.S. Bureau of Mines Report of Investigations 6702,1965