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3. E. Parliament, the Council, Directive 2012/27/eu on the energy efficiency, Journal of the European Union(2012).
4. E. Parliament, the Council, Directive 2002/91/ec on the energy performance of buildings, Journal of the European Union(2002).
5. E. Parliament, the Council, Directive 2010/31/eu on the energy performance of buildings (recast), Journal of the European Union(2010).