On the Welfare Effects of Regulating Price Discrimination
在线性需求和不变可变成本模型中，限制垄断者收取的相对价格而非绝对价格能带来福利改善，并探讨了这类限制的性质。
In a model with linear demands and constant variable costs, it is shown that a welfare gain is made by restricting the relative rather than absolute prices that a monopolist can charge for a range of products. The nature of this class of restrictions is considered. One application might occur if cost levels are unknown to the regulatory authority but costs are known to be linear functions of product characteristics. Copyright 1992 by Blackwell Publishing Ltd.