Jacek Blazewicz M. Jaroszewski New Algorithm for the Simplified Partial Digest Problem. 95-110 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2812&spage=95 2003 conf/wabi/2003 WABI db/conf/wabi/wabi2003.html#BlazewiczJ03