References
original source1)
[DBR02]
R.L. Dowden and J.B. Brundell and C.J. Rodger. VLF lightning location by time of group arrival (TOGA) at multiple sites. Journal of Atmospheric and Solar-Terrestrial Physics, 64(7):817-830, 2002.
[KS01]
W.J. Koshak and R.J. Solakiewicz. TOA Lightning Location Retrieval on Spherical and Oblate Spheroidal Earth Geometries. Journal of Atmospheric and Oceanic Technology, 18(2):187-199, 2001.
[BSL09]
H.D. Betz, U. Schumann, and P. Laroche (Eds.) Lightning: Principles, Instruments and Applications. Springer Verlag, 2009.
1)
Documentation System RED, chapter References