1Akerlof, G.,19820 "'Labor Contracts as Partial Gift Exchange", Quarterly Journal of Economics, 97, 543-569.
2Blanchflower, D. & Oswald, A., 1988, "Profit-related Pay:Prose Pisecavered?" ,Economic Journal, 98 , 720-730.
3Blinder, A, 1992,Maintaining Competitiveness with High Wages,ICS Press, San Francisco, CA.
4Cable, J. & Fitzroy, F.,1980,"Cooperation and Productivity: Some Evidence from West German Experience".Economic Analysis and Workers " Management, 14, 163- 180.
5Cable, J. & Wilson, N,1990,"Profit Sharing and Productivity: Some Further Evidence", Economic Journal, 100,550-555.
6Chang, J., Lai, C. & Lin, C. ,2003,"Profit Sharing,Worker Effort, and Double-sided Moral Hazard in an Efficiency Wage Model",Journal of comparative Economics,31,75-93.
7Che, Y. & Yoo, S. ,2001,"Optimal Incentives for Teams", American Economic Review, 91 , 525-541.
8Falk, A., Gachter, S. & Kovacs, J., 1999,"Intrinsic Motivation and Extrinsic Incentives in A Repeated Game with Incomplete Contracts",Journal of Economic Psychology,20, 251-284.
9FitzRoy, F. & Kraft, K., 1987, "Cooperation, Productivity and Profit Sharing",Quarterly Journal of Economics,102, 23-36.
10Fitzroy, F. and Kraft,K.,1995, "On the Choice of Incentives in Firms",Journal of Economic Behavior and Organization,26,145- 160.