TY - CONF T1 - Witsenhausen's counterexample and its links with multimedia security problems T2 - International Workshop on Digital Watermarking (IWDW) Y1 - 2011 A1 - Pedro Comesaña A1 - Fernando Pérez-González A1 - Chaouki T. Abdallah KW - control KW - Multimedia security KW - Witsenhausen's counterexample JF - International Workshop on Digital Watermarking (IWDW) CY - Atlantic City, USA ER -