References Bain, J. (1949); Pricing in monopoly and oligopoly. American Economic Review, 39 (March). Brandts, J. y Matutes, C.: Los efectos de los impuestos en mercados oligopolísticos. En invitación a la Teoría Económica. Calsamiglia y Marimon (Directores). Editorial Ariel. Barcelona 1991. Corchon, L. and Marcos, F. (1988): Entry, Stackelberg equilibrium and reasonable conjectures. International Journal of Industrial organization 6(1988), pp. 509-515. Dierickx, J., Matutes, C. y Neyen, D. (1987): Value added tax and competition. International Journal of Industrial Orqanization. Vol. 6, 3, pp. 385-408. Dixit, A. (1979): A model of duopoly suggesting a theory of entry barriers. Bell Journal of Economics. Katz, M.L. y Rosen, H.S. (1985): Tax Analysis in an oligopoly model. Public Finance Quaterly, 13, pp. 3-20. Marcos, F. (1983): Aportaciones a la teoría del precio limite. Tesis Doctoral. Universidad Complutense de Madrid. Omori, T. and Yarrow, G. (1982): Product Diversification, entry prevention and limit pricing. Bell Journal of Economics 242-248.