Koenker, Roger W.; Perry, Martin K. - In: Bell Journal of Economics 12 (1981) 1, pp. 217-231
This paper generalizes a model of monopolistic competition attributable to Spence (1976). Firms produce symmetrically differentiated products with declining or U-shaped average costs. Free entry drives profits to zero in equilibrium. Spence finds that when firms behave "competitively," in a...