1. Ballard DH, Brown CM: Computer Vision. 1982 Prentice Hall Inc., Englewood Cliffs, N.J.
2. Buchanan MD, Pendergrass R: Digital image processing: Can intensity, hue and saturation replace red, green and blue? Electro-optical Systems Design, March 1980
3. Murch GM: Physiological Principles for the Effective Use of Color. IEEE C G & A, Nov. 1984
4. Baldwin, Lee: Color Considerations. BYTE, Sept. 1984
5. Cavailloles F, Bazin J, Di Paola R: Factor analysis in gated cardiac studies. J Nucl Med, 25: 1067–1079, 1984