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2. Energy 2001, Energy Conservation and Use of Renewable Energy Sources in Residential Sector, Ministry of Environment Urban Planning and Public Works, March 1995.
3. A. Sarides, Breakdown of Energy Sources for Heating in Western Europe, TECHNIKA, January 1998, pp. 28–32 (in Hellenic).
4. Insulation Measures for Retrofitting of Residential Buildings, THERMIE PROGRAMME ACTION No. B48.
5. C.A. Balaras, D.N. Asimakopoulos (Eds.), Final Technical Report on Energy, European Commission, Directorate General XII, for Science Research and Development, JOULE Programme, epiqr Project, Contract No JOR3-CT96-0044, Athens, 1998.