Ingemar J. Cox Ton Kalker Heung-Kyu Lee Digital Watermarking, Third InternationalWorkshop, IWDW 2004, Seoul, SouthKorea, October 30 - November 1, 2004, Revised Selected Papers 3304 2005 3-540-24839-0 IWDW Lecture Notes in Computer Science Springer db/conf/iwdw/iwdw2004.html