Coloma, Germán - In: Estudios de economía 37 (2010) 2, pp. 189-205
This paper is about a model of Bertrand competition in a homogeneous-good market with free entry of identical firms and variable returns to scale. If the optimum number of active firms in the market is two or more, and the number of active firms is equal to that optimum number, then Bertrand...