1. EDM — The State of the Art;Crookall;CIRP Annals,1971
2. Theory of Electric Spark Machining;Williams;AIEE Trans.,1952
3. The Effect of Thermal Conductivity Upon the Electrical Erosion of Metals;Zingerman;Sov. Phy. Tech. Phys.,1957
4. The Mechanism of Electrical Erosion of Metals in Liquid Dielectric Media;Zolotych;Sov. Phy. Tech. Phys.,1960
5. Present State of Theoretical Concepts of the Electrical Erosion of Metals;Nekrashevitch,1955