Year 2009 Abstract Overview of advantages, costs and legal framework concerning green roofs Authors Pendl, Manfred; Hüfing, Gerda; Muerth, Petra; Tributsch, Ingrid; Jäger-Katzmann, Sophie Case study(ies) Green roofs in Vienna, Austria Source type Project Report URL http://images.umweltberatung.at/htm/leitfaden_dachbegruenung.pdf