Equitable Conditional Access and Copyright Protection for Image Based on Trusted Third Parties. - Jean-Marc Boucqueau; Sylvie Lacroix; Benoît Macq; Jean-Jacques Quisquater (COST 237 Workshop, 1995)

Secure delivery of images over open networks. - Daniel Augot; Jean-Marc Boucqueau; Jean-François Delaigle; Caroline Fontaine; Eddy Goray (Proc. IEEE, 1999)