Monteverde, Kirk and David J. Teece (1982), "Supplier Switching Costs and Vertical Integration in the Automobile Industry", The Bell Journal of Economics, Vol. 13, No. 1. pp. 206-213 [http://www.edegan.com/pdfs/Monteverde%20Teece%20(1982)%20-%20Supplier%20Switching%20Costs%20and%20Vertical%20Integration%20in%20the%20Automobile%20Industry.pdf pdf]