Francisco Baptista Pereira Jorge Tavares Ernesto Costa Golomb Rulers: The Advantage of Evolution. 29-42 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2902&spage=29 2003 conf/epia/2003 EPIA db/conf/epia/epia2003.html#PereiraTC03