7Davies,S.W.,Morris,C..A New Index of Vertical Integration:Some Estimates for UK Manufacturing.International Journal of Industrial Organisation,1995,(13):151-177.
8Coles J.W.,William S.Hesterly.The Impact of Firm-specific assets and the Interaction of Uncertainty:An Examination of Make or Buy Decisions in Public and Private Hospitals.Journal of Economic Behavior & Organization,1998,(36):383-409.
9Fan Joseph P.H..Price Uncertainty and Vertical Integration:An Examination of Petrochemical Firills.Journal of Corporate Finance,2000,(6):345-376.
10Woodruff Christopher.Non-contractible Investments and Vertical Integration in the Mexican Footwear Industry.International Journal of Industrial Organization,2002,20:1197-1224.