MATTOS, César. Vertical foreclosure in telecommunications through access prices and interconnection quality. Economia Aplicada, São Paulo, Brasil, v. 6, n. 4, p. 735–765, 2002. DOI: 10.11606/1413-8050/ea220046. Disponível em: https://periodicos.usp.br/ecoa/article/view/220046.. Acesso em: 10 mar. 2025.