1. Travelling Waves on Transmission Systems;Bewley,1963
2. Electric Shock Waves in Power Systems;Rudenberg,1968
3. ‘The Distribution of Electricity in Thunderclouds’;Simpson;Proceedings Royal Society, Series A,1937
4. The Flight of Thunderbolts;Schonland,1964
5. ‘The Lightning Discharge’;Bruce;Journal IEE,1941