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(.):  monopolistic competition, Dixit-Stiglitz model, retailer, Nash equilibrium, Stackelberg equilibrium, social welfare, Pigouvian taxation
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. 2010. . 2. 2. . 341.
(.):  In Russia chain-stores gained a considerable market power. We combine a Dixit--Stiglitz industry with a monopolistic retailer. The questions addressed are: Does a retailer always deteriorate welfare, prices and variety of goods? Which market structure is worse: Nash or Stackelberg behavior? What should be the public policy in this area?

Original text was published in "Mathematical game theory and applications, - 2010. - V. 2., No 2. - P. 3-41.


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