1Grossman,Sanford and Oliver Hart, 1986, "The Costs and Benefits of Ownership: A Theory of Vertical and Lateral Integratiom. " The Journal of Political Econmy ,94:69-719o.
2Alchian, Armen, and Harold Demsetz, 1972, "Productiom, information Costs,and Bcopomic Organiation" ,merican Economic Review,62 : 777 -795.
3Jensen Michael and William Mekling, 1976, "Theory of the Finn: Managerial Behavior, Agency Costs and Ownership Structure",Journal of Financial Economy, 3 : 305-360.