Environmental performance index in brazilian ports: application of data envelopment analysis. Revista Brasileira de Iniciação Científica, [S. l.], v. 8, p. e021013, 2021. Disponível em: https://periodicoscientificos.itp.ifsp.edu.br/index.php/rbic/article/view/103. Acesso em: 23 aug. 2026.