1. ISA-S37.12: Specifications and tests for potentiometric displacement transducers; Instrument Society of America; Pittsburgh, USA; 1977; ISBN 87664-359-4
2. A novel smart resistive-capacitive position sensor;Li;IEEE Trans. I&M,1995
3. I. Yamano, K. Takemura, T. Maeno: Development of a robot finger for five-fingered hand using ultrasonic motors, Proceedings of the 2003 International Conference on Intelligent Robots and Systems, Las Vegas, Nevada, October 2003, pp. 2648–2653
4. Flexible angular sensor;Roduit;IEEE Trans. Instrum. Meas.,1998
5. An optimized MEMS-based electrolytic tilt sensor;Jung;Sens. Actuators A,2007