Oligopoly Power, Cross-Market Effects and Demand Relatedness: An Empirical Analysis. European Journal of Marketing and Economics, [S. l.], v. 6, n. 4, p. 1–11, 2023. DOI: 10.26417/8jrvv554. Disponível em: https://revistia.com/index.php/ejme/article/view/3483. Acesso em: 12 may. 2026.