1. Thunderstorm structure and circulation;Byers;J. Meterol.,1948
2. Chalmers, J. A., , Atmospheric Electricity, 2 Pergamon, New York, 1967,
3. Discussion on thunderstorm theory;Gunn,1965
4. Charge separation in a Florida thunderstorm;Hill;Q.J. R. Meteorol. Soc.,1984
5. Model of charge separation in a Florida thunderstorm;Hill,1984