1. Correlation of specific energy with rock brittleness concepts on rock cutting;Altindag;J. South. Afr. Inst. Min. Metall.,2003
2. Assessment of some brittleness indexes in rock-drilling efficiency;Altindag;Rock Mech. Rock Eng.,2010
3. Progressive failure with special reference to the mechanism causing it;Bishop,1967
4. A rock brittleness evaluation method based on energy dissipation;Chen;Chin. J. Theor. Appl. Mech.,2015