1. International Energy Agency report, Technology Roadmap: Energy Efficient Buildings Heating and Cooling Equipment. http://www.iea.org/publications/freepublications/, 2003.
2. A review on buildings energy consumption information;Pérez-Lombard;Energy Build.,2008
3. Implementing the Cost-optimal Methodology in EU Countries;Atanasiu,2013
4. A Guide to Developing Strategies for Building Energy Renovation;Staniaszek,2013
5. An EU Strategy on Heating and Cooling;EU commission,2016