Prahladh Harsha Moses Charikar Matthew Andrews Sanjeev Arora Subhash Khot Dana Moshkovitz Lisa Zhang Ashkan Aazami Dev Desai Igor Gorodezky Geetha Jagannathan Alexander S. Kulikov Darakhshan J. Mir Alantha Newman Aleksandar Nikolov David Pritchard Gwen Spencer Limits of Approximation Algorithms: PCPs and Unique Games (DIMACS Tutorial Lecture Notes) http://arxiv.org/abs/1002.3864 2010 CoRR abs/1002.3864 db/journals/corr/corr1002.html#abs-1002-3864