4ALCHIAN A, DEMSETZ H. Production, Information Costs and Economic Organization [ J]. American Economic Review, 1972, (62): 777- 795.
5HOLMSTROM B. Moral Hazard in Team [ J ]. Bell Journal of Economics, 1982 (13):324- 340.
6MACLEOD W. Equity, Efficiency and Incentives in Cooperative Teams [ J]. In Advances in the Economic Analysis of Participatory and Labor Managed Finns, 1988 (3) : 5 -23.