Subhash Khot Ashok Kumar Ponnuswami Better Inapproximability Results for MaxClique, Chromatic Number and Min-3Lin-Deletion. 226-237 2006 conf/icalp/2006-1 ICALP (1) http://dx.doi.org/10.1007/11786986_21 db/conf/icalp/icalp2006-1.html#KhotP06