1. The lightning discharge;Bruce;J. IEEE, London,1941
2. The distribution of electricity in thunderclouds;Malan;Proc. Roy. Soc. London, A,1951
3. Magnetic field variations from lightning strokes in vicinity of thunderstorms;Norinder;Ark. Geofys.,1956
4. Measurements by frame aerials of current variations in lightning discharges;Norinder;Ark. Mat. Astron. Fys.,1945
5. Lightning discharge paths photographed in daylight and analyzed by simultaneous variations of magnetic field components;Norinder;Ark. Geofys.,1961