Alleman, James; Madden, Gary; Savage, Scott - In: Applied Economics 35 (2003) 6, pp. 665-673
An econometric model is used to examine market power in US international telephone markets. Lerner index estimates suggest AT&T's collection rate-cost margin was between 12% and 24% during 1991 to 1995. Although Lerner estimates imply deadweight welfare losses of up to US $261 million per annum,...