Jongsung Kim Seokhie Hong Sangjin Lee Jung Hwan Song Hyungjin Yang Truncated Differential Attacks on 8-Round CRYPTON. 446-456 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2971&spage=446 2003 conf/icisc/2003 ICISC db/conf/icisc/icisc2003.html#KimHLSY03