Vittorio Maniezzo Marco A. Boschetti Márk Jelasity An Ant Approach to Membership Overlay Design. 37-48 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3172&spage=37 2004 conf/antsw/2004 ANTS Workshop db/conf/antsw/antsw2004.html#ManiezzoBJ04