Scarparo, Fernanda Fabiana. “The Principle of Ability to Pay and Its Relations With Selectivity under the Excise Tax”. Revista do Direito Público 2, no. 1 (July 15, 2007): 165–174. Accessed March 29, 2025. https://ojs.uel.br/revistas/uel/index.php/direitopub/article/view/11480.