@article {2754,
	title = {Cooperation in Repeated Games when the Number of Stages is not Commonly Known},
	journal = {Econometrica},
	volume = {67},
	year = {1999},
	pages = {45--64},
	abstract = {It is shown that an exponentially small departure from the common knowledge assumption on the number T of repetitions of the prisoners{\textquoteright} dilemma already enables cooperation. More generally, with such a departure, any feasible individually rational outcome of any one-shot game can be ap},
	author = {Abraham Neyman}
}
