Jacob, L.R. and Vasconcellos, F.T. 2017. The Extrafiscality as Means the Protection Mechanism Ecologically Balanced Environment. Revista de Direito Tributário e Financeiro. 2, 2 (Feb. 2017), 221–237. DOI:https://doi.org/10.26668/IndexLawJournals/2526-0138/2016.v2i2.1370.