We bridge the organisational economics and industrial economics literatures on the vertical boundaries of the firm by contextualising the transaction cost approach to the make-or-buy decision within an oligopolistic market structure. Firms invest in the quality of the intermediate resulting in...

We study the make-or-buy decision of oligopolistic firms in an industry in which final good production requires specialized inputs. Firms' mode of operation decision depends on both the incentive to economize on costs and on strategic considerations. We explore the strategic incentives to...

This paper analyses how product differentiation affects the volume of trade under duopoly using Shubik-Levitan demand functions rather than the Bowley demand functions used by Bernhofen (2001). The Shubik-Levitan demand functions have the advantage that an increase in product differentiation...