[4] STENGER D, RIENOW A, MENZ G. Sprawling cities and shrinking regions-Forecasting urban growth in the RUHR for 2025 by coupling cells and agents[D]. Erdkunde, 68, 85-107(2014).
[5] GRAMKE J, DURR H. Renewal of the Ruhr area: Regional heritage and organisation for the future[D]. Bochumer Geographische Arbeiten, 58(1993).
[6] HEIDENREICH M. The new museum folkwang in Essen. A contribution to the cultural and economic regeneration of the ruhr area?[D]. European Planning Studies, 23, 1529-1547(2015).
[7] REIMER M. Governance in the Ruhr urban region 2030: From research group to a region capable of acting[D]. Berichte zur Deutschen Landeskunde, 82, 379-397(2008).
[8] SCHIEK M. Corporate regional responsibility: Why do companies get involved together for their region? Motives for the collective regional assumption of responsibility of companies, using the examples of the Ruhr Initiative Group and the Economic Initiative FrankfurtRhineMain[D]. Standort, 40, 19-24(2016).
[9] LAUDERBACH M. Effective governance to develop creative quarters: Three case studies from Germany[D]. Quaestiones Geographicae, 31, 77-86(2012).
