@conference {cVidal00,
	title = {Data Hidding in Color Images using Perceptual Models},
	booktitle = {COST 254 Intelligent Processing and Facilities for Communications Terminals},
	year = {2000},
	pages = {21{\textendash}25},
	author = {Vidal, J. and Elisa Sayrol and Maribel, M.}
}
@conference {cGasull88,
	title = {Detecci{\'o}n autom{\'a}tica de contornos en im{\'a}genes ecogr{\'a}ficas},
	booktitle = {III Simposium Nacional de Reconocimiento de Formas y An{\'a}lisis de Im{\'a}genes},
	year = {1988},
	pages = {1{\textendash}4},
	isbn = {?},
	author = {Gasull, A. and Marqu{\'e}s, F. and Sallent, S. and Torres, L. and Vidal, J.}
}
