Perroni, Marcos Gonçalves, Sérgio Eduardo Gouvêa Da Costa, Wesley Vieira Da Silva, Edson Pinheiro De Lima, and Claudimar Pereira Da Veiga. 2016. “Analysis of Income Elasticities of Brazil’s Energy Matrix”. International Journal of Energy Economics and Policy 6 (3):431-41. https://econjournals.com./index.php/ijeep/article/view/2262.