WINKELMANN, Hans-Peter. Making the European Higher Education Area Sustainable. Ökologisches Wirtschaften - Fachzeitschrift, [S. l.], v. 21, n. 3, 2006. DOI: 10.14512/oew.v21i3.472. Disponível em: https://oekologisches-wirtschaften.de/index.php/oew/article/view/472. Acesso em: 3 mai. 2024.