@InProceedings{	  Buchsbaum83,

author = {G. Buchsbaum and A. Gottschalk},
title = {Trichromacy, opponent colours coding and optimum colour
information transmission in the retina},
booktitle = {Proc. of the Royal Society of London},
volume = {220},
year = {1983},
pages = {89--113},
theme = {vision,physiologie,perception,trivariance}
 }