Michael R. Dransfield V. Wiktor Marek Miroslaw Truszczynski Satisfiability and Computing van der Waerden Numbers. 1-13 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2919&spage=1 2003 conf/sat/2003 SAT db/conf/sat/sat2003.html#DransfieldMT03