1. Benidi, L. (1980) Analysis of the electromagnetic interaction between a resonator and a lossy dielectric body as a first approach to non-invasive heart movement detection.IEEE Trans.,BME-27, 623–630.
2. Cheng, D. (1964) The reflected impedance of a circular coil in the proximity of a semi-infinite medium. Ph.D Dissertation, University of Missouri, Columbia, Jan. 1964.
3. Cheng, D. (1965) The reflected impedance of a circular coil in the proximity of a semi-infinite medium.IEEE Trans.,IM-14, 107–116.
4. Fenton, T. R. andVas, R. (1973) Measuring characteristics of the displacement cardiograph.Med. & Biol. Eng.,11, 552–559.
5. Gay, T. C., Vas, R., Pittman, D. E., Joyner, C. R. andMontello, N. J. (1976) The displacement cardiograph: a noninvasive technique for recording myocardial wall motion.Circ.,53, 139–143.