@ARTICLE{    Joy96,

author = {G. Joy and Z. Xiang},
year = 1996,
title = {Reducing {False} {Contours} in {Quantized} {Color} {Images}},
journal = {Computers & Graphics},
volume = 20,
number = 2,
pages = {231--242},
theme = {compression,quantification,contour}
 }