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2. EN 15251:2007 Indoor environmental input parameters for design and assessment of energy performance of buildings addressing indoor air quality, thermal environment, lighting and acoustics. Bruxelles: European Committee for Standardization.
3. D raft EN 16798, European Standard, Energy Performance of Buildings. Bruxelles: European Committee for Standardization.
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5. EN 16247:2014 European Standard Energy audits - Part 2: Buildings. Bruxelles: European Committee for Standardization.