1. S.S. Stevens: Handbook of Experimental Psychology (Wiley, New York 1951)
2. T.N. Cornsweet: Visual Perception (Academic, New York 1970)
3. S. Hecht: “Quantum Relations of Vision,” J. Opt Soc. Am. 32, 42 (1942)
4. A. Rose: Vision: Human and Electronic (Plenum, New York 1973)
5. M.E. Chevreul: Laws of Color Contrast (Routledge, London, 1868; Imprimerie Nationale, Paris, 1889; Reinhold, New York, 1967) (first published 1839). This excellent book is an example of the extent to which detailed knowledge about human vision was available long before the advent of modern technology.