1. “The Riddle of Ball Lightning.”;Leonov,1966
2. Preliminary report on ball lightning, second Ann. Div. of Plasma Phys. Mtg.;McNally,1960
3. “Ball Lightning Characteristics,”;Rayle,1966
4. A review of ball lightning;Silberg,1965
5. Manwaring. J. F. (1966). Personal communication, Radio Frequency Co., 20 Park Street, Medfield, Massachusetts.