1. The failure of brittle solids containing small cracks under compressive stress states;Ashby;Acta Metall.,1986
2. Standard test method for unconfined compressive strength of intact rock core specimens;ASTM,1995
3. Standard test method for elastic moduli of undrained intact rock core specimens in biaxial compression;ASTM,1995
4. Standard test method for splitting tensile strength of intact rock core specimens;ASTM,1995
5. Microcracks closure in rock under stress: direct observation;Batzle;J. Geophys. Res.,1980