52 – Sonja Koeppel–Diana Ürge-Vorsatz: Assessment of policy instruments for reducing greenhouse gas emissions from buildings. Report for the UNEP-Sustainable Buildings and Construction Initiative; CEU, Bp., 2007,
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- 52 – Sonja Koeppel–Diana Ürge-Vorsatz: Assessment of policy instruments for reducing greenhouse gas emissions from buildings. Report for the UNEP-Sustainable Buildings and Construction Initiative; CEU, Bp., 2007,
