1. Charles River Associates. ‘A Case Study of Ceramic Cutting Tools’. Report on Technological and Economic Assessment of Advanced Ceramic Materials, Vol. 6, August 1984.
2. ‘Modern Ceramic Cutting Tool Materials’;Whitney;Powder Metallurgy International,1983
3. ‘Refractories, Production and Properties’;Chesters,1973
4. ‘Progress in Nitrogen Ceramics’;Riley,1973
5. United Kingdom Patent Nbr. 1536290, 1978. The Improvement In or Related to the Reaction Bended Silicon Nitride.