1. ASHRAE, ASHRAE Standard 55: Thermal Environmental Conditions for Human Occupancy, American Society of Heating, Refrigerating and Air-conditioning Engineers, Atlanta, USA, 1992.
2. ISO 7730, Moderate Thermal Environments—Determination of the PMV and PPD Indices and Specifications for Thermal Comfort, 2nd ed., International Organisation for Standardisation, Geneva, Switzerland, 1995.
3. An analysis of some observations of thermal comfort in an equatorial climate;Webb;British Journal of Industrial Medicine,1959
4. C.G. Webb, Thermal discomfort in an equatorial climate, Journal of the Institution of Heating and Ventilating Engineers, 1960.
5. A comfort graph for life in the tropics;Webb;The New Scientist,1961