1. Efficiency of sweat evaporation in unacclimatized man working in a hot humid environment;Alber Wallerström;Eur. J. Appl. Physiol.,1985
2. Index for evaluating heat stress in terms of resulting physiological strains;Belding;Heat. Piping & Air Cond.,1955
3. Büttner, K., 1938. Physikalische Bioklimatologie. Probleme und Methoden (Physical bioclimatology. Problems and Methods). Akademische Verlagsgesellschaft, Leipzig.
4. ISO 7243, 1989. Hot environments - Estimation of heat stress on working man, based on the WBGT-index (wet bulb globe temperature). ISO, Geneva.
5. ISO 7933, 1989. Hot environments - Analytical determination and interpretation of thermal stress using calculation of required sweat rate. ISO, Geneva.