1. High resolution frequency–time analysis of whistlers using digital matched filtering—Part I: theory and simulation studies;Hamar;Annales de Geophysique,1982
2. Trace splitting of whistlers: a signature of fine structure or mode fitting in magnetospheric ducts;Hamar;Radio Science,1992
3. Park, C.G., 1972. Methods of determining electron concentration in the magnetosphere from nose whistlers, Technical Report, 3453-1, Radio Science Laboratory, Stanford University, Stanford.
4. The RF spectra of first and subsequent lightning return strokes in the 1–200km range;Serhan;Radio Science,1980
5. Whistlers studies at low latitudes: a review;Singh;Indian Journal of Radio and Space Physics,1993