On Tariffs and Optimal Taxation Policy in Developing Countries. The Pakistan Development Review, [S. l.], v. 24, n. 3-4, p. pp.443–452, 2022. DOI: 10.30541/v24i3-4pp.443-452. Disponível em: https://thepdr.pk/index.php/pdr/article/view/689. Acesso em: 8 jun. 2025.