6Kavtaradze O N,Lipchanskii,et al.Vibration of wire electrode during electroerosion machining with the superposion of ultrasonic vibrations.Sov.surf.Eng.App.Electrochem,1989:13-17.
7GUO ZN,Lee T C,Yue T M,et al.A study of ultrasonic-aided wire electrical discharge machining.Journal of Materials Processing Technology,1997(63):823-828.
8Dauw D F,Sthioul H,Delpretti R,et al.Wire analysis and control for precision EDM cutting.Annnals of the CIRP,1989,38(1):191-194.
9Mohri N,Yamada H,Furutani K,et al.System identification of wire electrical discharge machining.Annnals of the CIRP,1998,47(1):173-176.
