Perroni, M., Dalazen, L. L., Da Silva, W. V., Gouvêa, S., & Da Veiga, C. P. (2015). Evolution of Risks for Energy Companies from the Energy Efficiency Perspective: The Brazilian Case. International Journal of Energy Economics and Policy, 5(2), 612–623. Retrieved from https://econjournals.com./index.php/ijeep/article/view/1058