The new Leipzig charter: synthesis and focus : empowering cities to act in pursuit of the common good ; documentation of work process and presentation of results / published by Federal Institute for Research on Building, Urban Affairs and Spatial Development (BBSR) within the Federal Office for Building and Regional Planning (BBR) ; edited by German Association for Housing, Urban and Spatial Development (DV), Berlin, Heike Mages, Einsateam, Berlin, Franziska Eidner