1. Miller DE. Rock drilling with impregnated diamond microbits. [Ph.D. thesis], University of Cape Town, Cape Town; 1986.
2. Drilling in extreme environments: penetration and sampling on earth and other planets;Bar-Cohen,2009
3. Applied drilling engineering;Bourgoyne,1986
4. Grinding forces and energy;Brach;J Eng Ind,1988
5. Study on the friction coefficient in grinding;Cai;J Mater Process Technol,2002