Sébastien Choplin Lata Narayanan Jaroslav Opatrny Two-Hop Virtual Path Layout in Tori. 69-78 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3104&spage=69 2004 conf/sirocco/2004 SIROCCO db/conf/sirocco/sirocco2004.html#ChoplinNO04