2Paul E. Annual green roof industry survey for 2012[R/OL]. Green Roofs for HealthyCities- NorthAmericalnc. [2012]. http://wvcw.greenroofs.org/ resources/SurveyR eport2012FINAL 1 .pdf.
3Gnya N. Green Roof Policies: Tools for encouraging sustainable design[R/OL]. Canada:Landsca peArchitectureCanadaFoundation. [2004]. http://www. gnla.ca/assets/Policy%20report.pdf.
4Dunnett N P, Kingsbury N. Planting green roo and living walls[M]. Portland(OR): Timber Press, Inc, 20O4.
5Lipman H. Chicago Climate Action Plan[R/OL]. Chicago: Chicago Climate Task Force. [20081. www. chicagoclimateaction.org.
6Design for London and the Greater London Authority's London Plan and Environment Teams. Living roofs and walls-Technical report: Supporting London Plan[R/OL]. London: Greater London Authority City Hall. I20g]. http://www.london.gov. uk/sites/default/files/archives/uploads-living-roos. pdf.
7Gundula P, Heide J, Arnulf S. Overview of best practices for limiting soil sealing or mitigating its effects in EU-271R./OL]. The European Commission, DG Environment. [2011]. http://ec.europa.eu/ environment/soil/sealing.htm.
8Nora S. Green lkoof Incentives-A 21I{1 Resource Guide[R/OL], Washington, D.C.: DC Greenworks. [2010]. http://www.dcgreenworks.org.
9Gail L, Beth A C, Hitesh D. Green roofs- A Resource Manual for Municipal Policy Makers[R/OL]. Canada: Canada Mortgage and Housing Corporation, http://www.cmhc.ca.
