@conference {uvigo:atutorial,
	title = {A Tutorial on Digital Watermarking},
	booktitle = {IEEE Annual Carnahan Conference on Security Technology},
	year = {1999},
	month = {October},
	address = {Madrid, Spain},
	keywords = {data-hiding, watermarking},
	author = {Fernando P{\'e}rez-Gonz{\'a}lez and Juan R. Hern{\'a}ndez}
}
