SHELDON, I.; ROE, B. Vertical product differentiation and credence goods: Mandatory labeling and gains from international integration. EconoQuantum, [S. l.], v. 5, n. 1, p. 9–33, 2009. DOI: 10.18381/eq.v5i1.88. Disponível em: https://econoquantum.cucea.udg.mx/index.php/EQ/article/view/88. Acesso em: 22 dic. 2024.