[Paxinor]

there is other exploiting than just calling a bluff on the river which happen every 50 hands...

there is also often exploitable spots in preflop play or flop play (fold to often) that makes it the maximal strategy to raise 100% of your hands. you dont want to do that because your opponent will adjust very fast...

@ gilpin and sandholm papers: go to gilpins homepage, there are 3 papers with technical reports and proofs and everything, you can even play the optimal solution.