1. Birchfield, S.: An Elliptical Head Tracker. In: Proceeding of the 31st Asilmor, Conference on Signals, Systems and Computers, pp. 1710–1714 (1997)
2. Fausett, L.: Fundamentals of Neural Networks, Architectures, Algorithms and Applications, pp. 101–125. Prentice Hall, Englewood Cliffs (1994)
3. Genno, H., Saijo, A., Yoshida, H., Suzuki, R., Osumi, M.: Non-Contact Method for Measuring Facial Skin Temperature. Industrial Ergonomics 19, 147–159 (1997)
4. Gonzalez, R.C., Woods, R.E., Eddins, S.L.: Digital Image Processing Using MATLAB, pp. 334–358. Prentice Hall, Englewood Cliffs (2004)
5. Kim, K.S., Yoon, T.H., Han, M.H., Shin, S.W., Kim, I.Y., Lee, S.M.: Face Recognition and Thermal Feature Extraction for Health Monitoring. In: International Ubiquitous Healthcare Conference, pp. 85–86 (2004)