Felix Wolf Bernd Mohr Jack Dongarra Shirley Moore Efficient Pattern Search in Large Traces Through Successive Refinement. 47-54 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3149&spage=47 2004 conf/europar/2004 Euro-Par db/conf/europar/europar2004.html#WolfMDM04