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Helliwell, RA.  1983.  VLF wave injections from the ground. ESA Special Publication. 195:3-9.
Helliwell, RA, Katsufrakis JP.  1974.  VLF Wave Injection Into the Magnetosphere From Siple Station, Antarctica. JOURNAL OF GEOPHYSICAL RESEARCH. 79
Helliwell, RA, Inan US.  1982.  VLF wave growth and discrete emission triggering in the magnetosphere - A feedback model. Journal of Geophysical Research. 87:3537-3550.
Inan, US, Bell TF, Helliwell RA, Katsufrakis K  P.  1981.  A VLF transmitter on the Space Shuttle. Advances in Space Research. 1:235-239.
Chang, D  C  D, Helliwell RA.  1980.  VLF pulse propagation in the magnetosphere. IEEE Transactions on Antennas and Propagation. 28:170-176.
Helliwell, RA.  1966.  VLF noise of magnetospheric origin, Progress in Scientific Radio, 1963-1966. National Academy of Sciences Publ.. :1468.
Helliwell, RA, Katsufrakis J  P, Bell TF, Raghuram R.  1975.  VLF line radiation in the earth's magnetosphere and its association with power system radiation. Journal of Geophysical Research. 80:4249-4258.
Wang, TNC.  1970.  VLF Input Impedance Characteristics of an Electric Antenna in a Magnetoplasma.
Carpenter, DL, Helliwell RA.  1966.  Very-low-frequency phenomena. Antarctic Journal of U.S.. :193-194.
Helliwell, RA.  1971.  Very-low-frequency magnetospheric research in the Antarctic. Res. in the Antarctic. :493-511.
Helliwell, RA, Brice NM.  1964.  Very Low Frequency Emission Periods and Whistler Mode Group Delays. Journal of Geophysical Research. 69:4704-4708.
Carlson, C  R, Helliwell RA, Carpenter DL.  1985.  Variable frequency VLF signals in the magnetosphere Associated phenomena and plasma diagnostics. Journal of Geophysical Research. 90:1507-1521.
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Smith, RL.  1960.  The Use of Nose Whistlers in the Study of the Outer Ionosphere.
Helliwell, RA.  1970.  The upper atmosphere as seen from Antarctica. Bulletin of the Atomic Scientists. :55-61.
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Dunckel, N, Helliwell RA, Vesecky J.  1972.  Type III Solar Noise Observed below 100 kHz on OGO 3. I. Description of Events. Solar Physics. 25:197-209.
Helliwell, RA.  2000.  Triggering of whistler mode emissions by the band-limited impulse(BLI) associated with amplified Vlf signals from Siple Station, Antarctica. Geophysical Research Letters. 27:1455.
Smith, R  L, Helliwell RA, Yabroff I  W.  1960.  A Theory of Trapping of Whistlers in Field-Aligned Columns of Enhanced Ionization. Journal of Geophysical Research. 65:815.
Helliwell, RA.  1967.  A Theory of Discrete VLF Emissions from the Magnetosphere. Journal of Geophysical Research. 72:4773.
Dejnakarintra, M.  1974.  A Theoretical Study of Electrical Coupling Between the Troposphere, Ionosphere, and Magnetosphere.
Inan, US, Helliwell RA, Kurth W  S.  1983.  Terrestrial versus Jovian VLF chorus - A comparative study. Journal of Geophysical Research. 88:6171-6180.
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Raghuram, R.  1977.  Supperssion Effects Associated with VLF Transmitter Signals Injected into the Magnetosphere.
Helliwell, RA.  1960.  Summary of research on whistlers and related phenomena. J. Res. NBS. 64D(6):642.
Inan, US, Carpenter DL, Helliwell RA, Katsufrakis J  P.  1985.  Subionospheric VLF/LF phase perturbations produced by lightning-whistler induced particle precipitation. Journal of Geophysical Research. 90:7457-7469.
Sa, L  A  D, Helliwell RA.  1988.  Structure of VLF whistler mode sideband waves in the magnetosphere. Journal of Geophysical Research. 93:1987-1992.
Helliwell, RA.  1972.  The structure of the plasmasphere on the basis of indirect measurements.. The Upper Atmosphere: Part IV of Solar-Terrestrial Physics/1970. :165-175.