1. T. Sashida and T. Kinjo, An introduction to ultrasonic motors, Clarendon Press, Oxford (1993).
2. S. Ueha, Y. Tomikawa, M. Kurosawa and N. Nakamura, Ultrasonic motors: Theory and applications, Clarendon Press, Oxford (1993).
3. K. Nakamura and S. Uhea, Potential ability of ultrasonic motors: a discussion focused on the friction control mechanism, Electronics and Communication in Japan, 281 (4) (1998) 57–68.
4. T. Morita, Miniature piezoelectric motors, Sensors and actuators A, 103 (2003) 291–300.
5. K. Hideki, H. Yasuo, K. Hitoshi and H. Toshiro, Positioning and measurement using a crystalline lattice reference scale—A feasibility study of STM application to MEMS, IEEE Micro Electro Mechanical Systems-An Investigation of Micro Structures, Sensors, Actuators, Machines (1990) 197–202.