Andrea Abrardo Mauro Barni Fixed-Distortion Orthogonal Dirty Paper Coding for Perceptual Still Image Watermarking. 52-66 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3200&spage=52 2004 conf/ih/2004 Information Hiding db/conf/ih/ih2004.html#AbrardoB04