1. Huntress, E.A., “Electrical Discharge Machining”, American Machinist, Special Report 706, August 1978, pp. 83-98.
2. Marks Standard Handbook for Mechanical Engineers;Baumeister,1978
3. “Electrospark Machining of the Cutting Elements of Sintered Carbide Blanking and Piercing Dies”;Chetverikov,1964
4. “Cutting Tool Materials”;Trent;Metallurgical Reviews, Review No. 127,1968
5. Kieffer R. Reiter N., and Fister D., “New Developments in the Field of Cemented-Carbide and Ceramic Cutting Tools”, Proceedings of the Iron and Steel Institute Conference, April, 1970, pp. 157-161.