1. Ikeda, M., 1972. The Movement of a Bubble in the Gap Depending on t he Single Elect rical Discharge, Journal of t he Japan Society of Elect rical Machining Engineers 6 (11), pp. 12-26. (in Japanese).
2. Fujimoto, R., Toshima, S., 1972. Observat ion of Electrode Wear Phenomena, Journal of t he Japan Societ y of Elect rical Machining Engineers 6 (11), pp. 48-63. (in Japanese).
3. Motoki, M., Yukimura, K., Wada, H., 1978. Met al Removal Mechanism of the EDM Process - Behaviors of Liquid Metal (Mercury) Caused by a Pulse Discharge in Wat er -, Journal of t he Japan Societ y of Electrical Machining Engineers 11 (22), pp. 100-114. (in Japanese).
4. Takezawa, H., Kokubo, H., Mohri, N., Horio, K., Yanagida, D., Sait o, N., 2007. A St udy on Single Discharge Machining with Low Melt ing T emperat ure Alloy, Proceedings of 15th Int ernat ional Symposium on Elect romachining, pp. 69-73.
5. Takezawa, H., Kobayashi, D., Asano, T ., Mohri, N., 2008. A St udy on Single Discharge Machining wit h Low Melt ing Temperat ure Alloy (12th Report) Relationship bet ween Bubble Shape and Removal Volume of Discharge Crat er, Proceedings of Spring Meet ing of the Japan Society for Precision Engineering, pp. 373-374. (in Japanese).