1. BLUM, H. F. (1961): Times arrow and the evolution of society. University Mag., 9: 9?13.
2. BLUM, H. F. (1964): Effects of sunlight on the human body. In: Medical S. Licht (ed.), L. Licht Publ., New Haven, Conn., 229?254.
3. BLUM, H. F. (1964): Effects of sunlight on the human body. In: Medical Climatology, S. Licht (ed.), L. Licht Publ., New Haven, Conn., 229?254.
4. BRIDGER, C. A. and HELFAND, L. A. (1968): Mortality from heat during July 1966 in Illinois. Int. J. Biometeorol., 12: 41?70.
5. BROTAK, E. A. and SHULMAN, M. D. (1973): A study of temperature trends in New Jersey. Bull. N.J. Acad. Sci., 18: 1?7.