@conference {pcomesan-iwdw11,
	title = {Witsenhausen{\textquoteright}s counterexample and its links with multimedia security problems},
	booktitle = {International Workshop on Digital Watermarking (IWDW)},
	year = {2011},
	month = {October},
	address = {Atlantic City, USA},
	keywords = {control, Multimedia security, Witsenhausen{\textquoteright}s counterexample},
	author = {Pedro Comesa{\~n}a and Fernando P{\'e}rez-Gonz{\'a}lez and Chaouki T. Abdallah}
}
