1. Epe, M., 1990, “Sensing systems and procedures for theft alarm systems”, IEE Colloquium on Vehicle Security. London, UK.
2. Ruser, H., Vossiek, M., von Jena, A., Magori, V., 1997, “Inverse filter technique for high-precision ultrasonic pulsed wave range Doppler sensors”, IEEE International Conference on Acoustics, Speech, and Signal Processing, Munich, Germany, pp2089-2093, vol.3.
3. Combined ultrasound and near infrared diffused light imaging in a test object;Quing Zhu;IEEE Transactions on Ultrasonic, Ferroelectrics, and Frequency Control,1999
4. Security PIDS with physical sensors, real-time pattern recognition, and continuous patrol;Peralta;IEEE Transac- tions on System, Man, and Cybernetics, Part C: Applications and Reviews,2003
5. Yoon-Gu Kim, Han-Kil Kim, Suk-Gyu Lee, Ki-Dong Lee, 2006, “Ubiquitous Home Security Robot Based on Sensor Network”, IEEE /WIC /ACM International Conference on Intelligent Agent Technology, Hong Kong, China, pp. 700-704.