Mauro Barni Ingemar J. Cox Ton Kalker Hyoung Joong Kim Digital Watermarking, 4th International Workshop, IWDW 2005, Siena, Italy, September 15-17, 2005, Proceedings 3710 2005 3-540-28768-X IWDW Lecture Notes in Computer Science Springer db/conf/iwdw/iwdw2005.html