In this article I investigate three single-shot models of differentiated-products oligopoly. In each model firms choose both output and price. The demand, cost, and spillover demand specifications are quite general, and there are three main results. First, with simultaneous choice there is no pure-strategy noncooperative equilibrium. Second, with output chosen first and announced to all firms before the choice of price, equilibrium sometimes exists, and when it does, it is the same as in a quantity-only model. Third, with price chosen and announced first, equilibrium always exists and is the same as in a price-only model.
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Volume (Year): 19 (1988) Issue (Month): 4 (Winter) Pages: 607-622 Download reference. The following formats are available: HTML
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