1. Basic Principles of Ventilation & Heating;Bedford,1964
2. The warmth of floors — a physical study;Billington;J Hyg,1948
3. The effects of the temperature of the floor surface and of the air on the thermal sensations and the skin temperature of the feet;Chrenko;Brit J Industr Med,1957
4. Ventilation Plants (V.D.I. Ventilation Rules);DIN 1946,1960
5. Thermal Comfort;Fanger,1970