4Gerald T.Garvey, (1995)“Why Reputation Favors Joint Ventures over Vertical and Horizontal Integration:A Simple Model,”Journal of Economic Behaviour and Organization 28, 387-397
5Grassman, Gene M., Helpman, Elhanan, (2001)“Integration vs Outsourcing in Industry Equilibrium,”Discussion Paper in Economics No.212, Woodrow Wilson School of Public and International Affairs, Princeton University.(2002) “Outsourcing in a Global Economy,”NBER Working Paper No 8728.
6Isabelle B, (2003)“Vertical Integration and Incentives to Innovate,”International Journal of Industrial Organization 21, 457-488
7Marsh, Peter, (2001)“A Sharp Sense of the Limits to Outsourcing,”The Financial Times July 31, P10.
8Radner, Roy (1991)“Dynamic Game in Organization Theory,”Journal of Economic Behaviour and Origanization 16, 217-260
9Tadelis, Steven, (2002)“Complexity, Flexibility, and the Make-or-Buy Decision,”American Economic Review 433-437.
10Tirole,Jean, (1999)“Incomplete Contracts: Where Do We Stand?,”Econometrica vol.67, 741- 781