Integrated cities and city-regions : stocktaking urban support approaches : a guide of tools for sustainable urban development : handbook / published by giz, Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH ; authors Carmen Vogt (head of project, GIZ), Lennard Kehl, Toni Kaatz-Dubberke, Barbara Scholz (GIZ), Luciana Maia (external consultant) ; editorial Rebecca Tenbusch (GIZ)