1. T. Bedford, The Warmth Factor in Comfort at Work, MRC Industrial Health Board Report No. 76, HMSO, 1936.
2. Tropical Summer Index—a study of thermal comfort in Indian subjects;Sharma;Building and Environment,1986
3. The effects of measurement and formulation error on thermal comfort indices in the ASHRAE database of field studies;Humphreys;ASHRAE Transactions,2000
4. ISO Standard 7730: Moderate Thermal Environments—Determination of the PMV and PPD Indices and Specification of the Conditions for Thermal Comfort, International Organisation for Standardisation, Geneva, 1994.
5. ASHRAE Standard 55—Thermal Environment Conditions for Human Occupancy, American Society of Heating Ventilating and Air-conditioning Engineers, Atlanta, USA, 1992.