DILLER, Christian; KNIELING, Jörg. The Hamburg metropolitan region: Perspectives for inter-state co-operation. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 61, n. 3, p. 198–210, 2003. DOI: 10.1007/BF03183808. Disponível em: https://rur.oekom.de/index.php/rur/article/view/1619.. Acesso em: 1 may. 2024.