1. M. Sharpe, J. Seals, A. MacDonald, S. Crowgey, Non-contact vital signs monitor, U.S. Patent 4958638,
http://www.freepatentsonline.com/4958638.html
2. A. Lynn, L. John, W. Ohley, Non-contact waveform monitor, U.S. Patent 7128714,
http:// www.freepatentsonline.com/7128714.html
3. N. Sun, M. Garbey, A. Merla, and I. Pavlidis, Estimation of blood flow speed and vessel location from thermal video, IEEE Computer Society Conference on Computer Vision and Pattern Recognition, Vol. 1, Washington, DC, June 27–July 2, 2004, pp. 356–363.
4. N. Sun, M. Garbey, A. Merla, and I. Pavlidis, Imaging the cardiovascular pulse, IEEE Computer Society Conference on Computer Vision and Pattern Recognition, Vol. 2, June 2005, 20–25, pp. 416–421
5. R. Serway, Physics for Scientists and Engineers, 3rd ed., Saunders, 2003