Correlation of whistler mode phase delay with transient hydromagnetic waves. Journal of Geophysical Research. 95:15059-15071.
Stimulation of Pc 1 geomagnetic pulsations by naturally occurring repetitive VLF activity. Geophysical Research Letters. 7:851-853.. 1980.
A comparison of ULF and VLF measurements of magnetospheric cold plasma densities. Journal of Geophysical Research. 82:5063-5072.