GOYANNES GUSMÃO CAIADO, R.; CAETANO HEYMANN, M.; LUIS REY DA SILVEIRA, C. .; ANGULO MEZA, L. .; GONÇALVES QUELHAS, O. L. Measuring the Eco-efficiency of Brazilian Energy Companies using DEA and Directional Distance Function . IEEE Latin America Transactions, [S. l.], v. 18, n. 11, p. 1844–1852, 2021. Disponível em: https://latamt.ieeer9.org/index.php/transactions/article/view/3693. Acesso em: 22 jul. 2024.