STEP 05 progress report 2010 / owner and publisher: Urban Development Vienna, Municipal Department 18 – Urban Development and Planning ; projekt co-ordination: Kurt Mittringer ; editorial team: Kurt Puchinger, Thomas Madreiter, Gabriele Zimmermann, Kurt Mittringer ; texts: Christian ZillnerSTEP 05 progress report 2010 / owner and publisher: Urban Development Vienna, Municipal Department 18 – Urban Development and Planning ; projekt co-ordination: Kurt Mittringer ; editorial team: Kurt Puchinger, Thomas Madreiter, Gabriele Zimmermann, Kurt Mittringer ; texts: Christian Zillner