1Abreu,D.,"On the theory of infinitely repeated games with discounting",pp.383-396,Econometria 56,1988.
2Kreps,D."Corporate Culture and Economic Theory",in J.Alt and K.Shepsle,eds.,Perspectives on Positive Political Economy,pp.90-143.Cambridge University Press,1990.
3Avner Greif.“Reputation and coalition in medieval trade:evidence on the Maghribi traders”,pp.857-882.Journal of Economic History 49.1989.