1. Actuator for type “a shaking beam”;Vasiljev,2002
2. Vibromotors for Precision Microrobots;Bansevicius,1988
3. Piezoelectric tool actuator for precision machining on conventional CNC turning centers;Woronko;Precision Eng.,2003
4. A platform for micropositioning based on piezo legs;Juhas;Mechatronics,2001
5. Piezoelectric ultrasonic motors;Wallaschek;J. Intell. Mater. Syst. Struct.,1995