Darse Billings Neil Burch Aaron Davidson Robert C. Holte Jonathan Schaeffer Terence Schauenberg Duane Szafron Approximating Game-Theoretic Optimal Strategies for Full-scale Poker. 661-668 2003 conf/ijcai/2003 IJCAI db/conf/ijcai/ijcai2003.html#BillingsBDHSSS03