1. BACH, W., HAGEDORN, T. and MATHEWS, E. (1970): Variation of atmospheric turbidity with height over an urban area. Proc. Ass. Amer.Geogr., 2: 4–8.
2. BACH, W. and PATTERSON, W. (1969): Heat budget studies in greater Cincinnati. Proc.Ass.Amer.Geogr., 1: 7–11.
3. BEDFORD, T. (1946): Environmental Warmth and Its Measurement. Med.Res. Coun. War Memo No. 17, London, HMSO, 40 pp.
4. BELDING, H.S. (1967): Resistance to heat in man and other homeothermic animals. In: Thermobiology. A.H. Rose (ed.), Academic Press, London, 479–510.
5. BELDING, H.S. and HATCH, T.F. (1955): Index for evaluating heat stress in terms of resulting physiological strain. Heat., Piping, Air Condit., 27: 129–136.