PRICE DISCRIMINATION IN OLIGOPOLY: EVIDENCE FROM REGIONAL NEWSPAPERS*
利用瑞典报纸订阅数据，研究发现有本地竞争对手的报纸比垄断报纸提供更多折扣，且折扣使用与市场份额负相关，支持了针对竞争对手客户低价促销的理论预测。
Recent theoretical work has shown that the incentive to target rival firms' customers with low prices can increase price discrimination, and that the strength of the incentive depends on a firm's market position. Using data on Swedish newspaper subscriptions, we find strong support for these predictions. Newspapers with a local competitor sell a larger part of their circulation at a discount than monopoly newspapers. Moreover, in competitive markets, the use of discounts is inversely related to the newspaper's market share. We find no evidence that price discrimination based on observable and exogenous characteristics is influenced by the market structure.