BIZER, Kilian; STERNBERG, Rolf. Basic problems with indicator systems for regional sustainability. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 59, n. 5-6, p. 381–391, 2001. DOI: 10.1007/BF03183039. Disponível em: https://rur.oekom.de/index.php/rur/article/view/1480.. Acesso em: 2 may. 2024.