Fernando Pérez-González The Importance of Aliasing in Structured Quantization Index Modulation Data Hiding. 1-17 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2939&spage=1 2003 conf/iwdw/2003 IWDW db/conf/iwdw/iwdw2003.html#Perez-Gonzalez03