Amin Coja-Oghlan André Lanka The Spectral Gap of Random Graphs with Given Expected Degrees. 15-26 2006 conf/icalp/2006-1 ICALP (1) http://dx.doi.org/10.1007/11786986_3 db/conf/icalp/icalp2006-1.html#Coja-OghlanL06