Andrew Czarn Cara MacNish Kaipillil Vijayan Berwin A. Turlach Statistical Exploratory Analysis of Genetic Algorithms: The Influence of Gray Codes upon the Difficulty of a Problem. 1246-1252 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3339&spage=1246 2004 conf/ausai/2004 Australian Conference on Artificial Intelligence db/conf/ausai/ausai2004.html#CzarnMVT04