1. Anstis G. R . Chantikul P. Lawn B. R . & Marshall D. B. 1981 ceram. 64 533.
2. J .A m . ceram;Bansal G. K .;Soc.,1976
3. In `The science of ceramic machining and surface finishing' (ed. B. J . Hockey & R . W. Rice), N atn. Bur. Stand, spec;Bowles R .;Publ.,1979
4. J . A m . ceram;Anstis G. R .;Soc.,1981
5. J . appl;Ihiang S. S.;Phys.,1982