SALLER, Raymond. Local-authority partnerships within the Urban regions of western Germany: Aspiration and political reality. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 58, n. 2-3, p. 211–221, 2000. DOI: 10.1007/BF03185191. Disponível em: https://rur.oekom.de/index.php/rur/article/view/1147.. Acesso em: 15 jul. 2024.