7Macgorman D R,Burgess D W.Positive cloud-to-ground lightning in tornadic storm and hailstorms.Monthly Weather Review,1994,122:1671-1697
8Passi R M,Lopez R E.Parametric estimation of systematic errors in network of magnetic direction finders.J.Geography,1989,94(13):319-328
9Honma N,Suzuki F,Miyake F.Propagation effect on field waveforms in relation to time-of-arrival technique in lighting location.J. Geography,1993,98(14):141-145
10Kawasaki Z I, Yamamoto K Matsuum K, et al. SAFIR operation and evaluation of its performance. Geophysical Research Letters, 1994, 21 : 1133-1136.
