This chapter surveys recent theoretical developments in the intersection of price discrimination and imperfect competition, emphasizing how the introduction of competition fundamentally alters some well-established results derived from models of monopoly pricing

This paper examines the evolution of drug use in Colombia over the past years. Our analysis, based on surveys from the Dirección Nacional de Estupefacientes, shows that drug consumption grew substantially between 1996 and 2013. The growth occurred for both genders, all ages, socioeconomic...