KLEIVANE, Tron. Environmental Performance Evaluation. Ökologisches Wirtschaften - Fachzeitschrift, [S. l.], v. 11, n. 2, 1996. DOI: 10.14512/oew.v11i2.810. Disponível em: https://www.oekologisches-wirtschaften.de/index.php/oew/article/view/810. Acesso em: 3 mai. 2024.