@Article{	  Benzecri92,

author = {J. P. Benzecri},
title = {Compression des images polychromes et sensibilit'e au
contraste chromatique},
journal = {Les cahiers de l'analyse des donn'ees},
year = {1992},
volume = {XVII},
number = {2},
pages = {241--254},
theme = {vision,ecarts}
 }