1. The impact of weather on human health;Sulman;Rev Environ Health,1984
2. Smith, C. W. Best, S. Electromagnetic Man. New York, St. Martin’s Press, 1989
3. Panati, C. Breakthroughs. New York, Berkley Books, 1980, 190, 195
4. Effects of natural and man-made electric/electromagnetic fields on human health: a possible mechanism;Sher;Med Hypotheses,1997
5. Biological impact of small air ions;Krueger;Science,1976