1. Barlow, H.B., What causes trichromacy? A theoretical analysis using comb- filtered spectra, Vision Res., Vol. 22, pp. 635–643, 1982.
2. Buchsbaum, G., and Gottschalk, A., Trichromacy, opponent colours coding and optimum colour information transmission in the retina, Proc. Roy. Soc. London Ser. B, Vol. 220, pp. 89–113, 1983.
3. Buchsbaum, G., and Gottschalk, A., Chromaticity coordinates of frequency-limited functions, J. Opt. Soc. Amer. Ser. A, Vol. 1., pp. 885–887, 1984.
4. Burns, S.A., Eisner, A.E., Pokorny, J., and Smith, V.C., The Abney effect: Chromaticity coordinates of unique and other constant hues, Vision Res Vol. 24, pp. 479–489, 1984.
5. CIE Recommendations on Uniform Colour Spaces, Colour-difference Equations, and Psychometric Colour Terms, Supplement No. 2 to Publication CIE No. 15, Colorimetry (E-l.3.1) 1971, Bureau Central de la CIE, Paris, 1978.