@conference {wiamis04:dm,
	title = {Improved Binary Dither-Modulation with perceptual constraints},
	booktitle = {International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS)},
	year = {2004},
	month = {April},
	address = {Lisboa, Portugal},
	keywords = {data-hiding, watermarking},
	author = {Fernando P{\'e}rez-Gonz{\'a}lez and Pedro Comesa{\~n}a}
}
