Patrick R. Jordan Yevgeniy Vorobeychik Michael P. Wellman Searching for approximate equilibria in empirical games. 1063-1070 2008 AAMAS (2) http://doi.acm.org/10.1145/1402298.1402369 conf/atal/2008-2 db/conf/atal/aamas2008-2.html#JordanVW08