@proceedings {61998,
	title = {Halftone image watermarking based on visual cryptography},
	journal = {2005 12th IEEE International Conference on Electronics, Circuits and Systems},
	year = {2005},
	month = {2005},
	pages = {1-4},
	publisher = {IEEE},
	isbn = {9972-611-00-0},
	author = {Tifedjadjine, Zohra and Atamna, N and Zohir Dibi and Bouridane, Ahmed}
}
