1. Jeswani, M.L., 1979, Small Hole Drilling in EDM, International Journal of Machine Tool Design and Research, Vol. 19, pp. 165-169.
2. Munz, M., Haas, R., 2010, Neue Entwicklungen in der Funkenerosion, Symposium: Innovatie in EDM.
3. Sommer, C., Sommer, S., 2005, Complete EDM Handbook, http://www.reliableedm.com/Free-CompleteAdvance.
4. Tantra, N.Y., Leao, F., Pashby, I.R., 2006, Evaluating theoretical equations to predict wear in electro-discharge machining, Proceedings of the 1st International Conference & 7th AUN/SEED-Net Fieldwise Seminar on Manufacturing and Material Processing, pp. 151-155.
5. Dijck, F. van, 1973, Physico-mathematical analysis of the electro discharge machining process, Diss. KU Leuven.