1. Ultrasonic machining I;Nishimura;Journal of the Faculty of Engineering of the University of Tokyo,1955
2. Report on ultrasonic machining;Neppiras;Metal-working Production,1956
3. Forschritte beim stosslappen mit Ultraschallfrequenz;Pahlitsch;Werkstattstrechnik,1960
4. Ultrasonic erosion and its dependence upon oscillating characteristics of the tool;Dikushin;Stanki i instrument,1958
5. Das Schleissen mit Ultraschall;Show;Microtechnik,1956