@techreport{oai:repository.dl.itc.u-tokyo.ac.jp:00042847,
 author = {Fujiwara-Greve, Takako and Masahiro, Okuno-Fujiwara},
 month = {Oct},
 note = {application/pdf, revised version subsequently published in The Review of Economic Studies, Vol.76, Issue 3 (July 2009), pp.993-1021, 本文フィルはリンク先を参照のこと},
 title = {Voluntarily Separable Repeated Prisoner's Dilemma},
 year = {2008}
}