Karl J. Brazier Graeme Richards Wenjia Wang Implicit Fitness Sharing Speciation and Emergent Diversity in Tree Classifier Ensembles. 333-338 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3177&spage=333 2004 conf/ideal/2004 IDEAL db/conf/ideal/ideal2004.html#BrazierRW04