RENDÓN CARDONA, A. J. Oligopolistic differentiation of the Colombian green bean coffee in the US market. Ecos de Economía, [S. l.], v. 17, n. 36, p. 99–125, 2013. DOI: 10.17230/ecos.2013.36.5. Disponível em: https://publicaciones.eafit.edu.co/index.php/ecos-economia/article/view/2160. Acesso em: 25 apr. 2024.