1. European Commission (EC). Action Plan for Energy Efficiency: Realising the Potential. COM(2006)545 final (2006). http://ec.europa.eu/energy/action_plan_energy_efficiency/doc/com_2006_0545_en.pdf.
2. GreenBuilding – Europe wide renovations of non-residential buildings;Pillen,2007
3. Analysis of the building owners’ motivations for investing in energy efficiency: results from the GreenBuilding Programme;Valentova,2008
4. S. Plesser, T. Wilken, N. Diech, EVA – Evaluation of Energy Concepts for Office Buildings, in: Proceedings of the IEECB’06. Improving Energy Efficiency in Commercial Buildings (2006). http://re.jrc.ec.europa.eu/energyefficiency/pdf/publications/IEECB06proceedings%20Vol1.pdf.
5. A review of buildings’ energy consumption;Pérez-Lombard;Energy and Buildings,2008