1. Qualitative Ubersicht uber Potential-, Feld- und Ladungsverhaltnisse bei einer Blitzentladung in der Gewitterwolke (Qualitative Survey of the Potential, Field and Charge Conditions during a Lightning discharge in the Thunderstorm Cloud);Kasemir,1950
2. H. Israel, Atmospheric Electricity, Vol. II (translated from German), published by the National Science Foundation, Washington, DC by the Israel Program for Scientific Translations, 1973
3. Triggered Lightning strikes to aircraft and natural intracloud discharges;Mazur;J. Geophys. Res,1989
4. The mechanism of the intracloud lightning discharge;Ogawa;J. Geophys. Res,1964
5. The cloud discharge;Brook,1977