OLIVEIRA, David; MENDES, Isabel. Green Taxation on Competitiveness: The Effect of the ISP Tax on the Portuguese Retail Sector of Road Fuels. International Journal of Energy Economics and Policy, [S. l.], v. 7, n. 1, p. 178–184, 2017. Disponível em: https://www.econjournals.com/index.php/ijeep/article/view/3652. Acesso em: 6 oct. 2024.