Monopolistic Quantity Rationing
研究定价垄断者能否通过限制买家购买数量来提高自身福利，发现买家同质时无效，异质时可能有效，且两商品情形下仅零约束有用。
In this paper we address the question of whether a price-setting monopolist can improve his welfare by imposing quantity constraints on buyers. We show first that if all buyers are identical, quantity rations are not useful for the monopolist. We then show by means of an example that if buyers are diverse, quantity rations may be desirable. It is shown that if there are only two commodities, the only constraint that may be useful to the monopolist is a zero constraint on one of the two commodities. An example shows that this property does not hold for more than two commodities.