Many competition policy issues in regulated industries concern the structure of prices charged by multiproduct firms--for example price discrimination, non-linear pricing, cross-subsidies, and network access pricing. This article first sets out the (Ramsey) principles of optimal pricing to...

This paper surveys the economics of market power from the perspective of contract theory. Various practices that might be of competition policy concern including price discrimination, quantity discounts, bundling, vertical integration, and contracts with customers -- are discussed in terms of...