Mahmoud Rafea Konstantin Popov Per Brand Fredrik Holmgren Seif Haridi Parallel Distributed Algorithms of the beta-Model of the Small World Graphs. 675-680 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2790&spage=675 2003 conf/europar/2003 Euro-Par db/conf/europar/europar2003.html#RafeaPBHH03