1. ASHRAE Handbook. Fundamentals volume, Energy Estimating Methods. Chapter 28, 28.10-28.11, Atlanta, 1989
2. CEN EN 832. Thermal Performance of Building, Calculation of Energy Use for Heating—Residential Buildings. Brussels, 1998
3. ANSI/ASHRAE, Standard 116-1983R. Methods of Testing for Rating and Seasonal Efficiency of Unitary Air Conditioners and Heat Pumps, 1993
4. European Commission DGXII. The Passys Services, Summary Report. Brussels, 1994
5. National Climatic Data Center, Federal Building, Asheville, North Carolina