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1984
Voss, H  D, Imhof W  L, Walt M, Mobilia J, Gaines E  E, Reagan J  B, Inan US, Helliwell RA, Carpenter DL, Katsufrakis J  P.  1984.  Lightning-induced electron precipitation. Nature. 312:740-742.
1985
Inan, US, Chang H  C, Helliwell RA, Imhof W  L, Reagan J  B, Walt M.  1985.  Precipitation of radiation belt electrons by man-made waves A comparison between theory and measurement. Journal of Geophysical Research. 90:359-369.
1989
Imhof, W  L, Voss H  D, Mobilia J, Walt M, Inan US.  1989.  Characteristics of short-duration electron precipitation bursts and their relationship with VLF wave activity. Journal of Geophysical Research. 94:10079-10093.
Inan, US, Walt M, Voss H  D, Imhof W  L.  1989.  Energy spectra and pitch angle distributions of lightning-inducedelectron precipitation - Analysis of an event observed on the S81-1 (SEEP) satellite. Journal of Geophysical Research. 94:1379-1401.
1994
Walt, M.  1994.  Introduction to geomagnetically trapped radiation. Camb. Atmos. Space Sci. Ser., Vol. 10,. 10
1996
Lehtinen, NG, Walt M, Inan US, Bell TF, Pasko V  P.  1996.  {$\gamma$}-ray emission produced by a relativistic beam of runaway electrons accelerated by quasi-electrostatic thundercloud fields. Geophysical Research Letters. 23:2645-2648.
1997
Walt, M.  1997.  From Nuclear Physics to Space Physics by Way of High Altitude Nuclear Tests. Discovery of the Magnetosphere. :253.
Carpenter, DL, Sonwalkar VS, Helliwell RA, Walt M, Inan US, Ikeda M, Caudle D  L.  1997.  Probing properties of the magnetospheric hot plasma distribution by whistler mode wave injection at multiple frequencies: Evidence of spatial as well as temporal wave growth. Journal of Geophysical Research. 102:14355-14362.
Sonwalkar, VS, Carpenter DL, Helliwell RA, Walt M, Inan US, Caudle D  L, Ikeda M.  1997.  Properties of the magnetospheric hot plasma distribution deduced from whistler mode wave injection at 2400 Hz: Ground-based detection of azimuthal structure in magnetospheric hot plasmas. Journal of Geophysical Research. 102:14363-14380.
1998
Imhof, W  L, Chenette D  L, Datlowe D  W, Mobilia J, Walt M, Anderson R  R.  1998.  The correlation of AKR waves with precipitating electrons as determined by plasma wave and x-ray image data from the POLAR spacecraft. Geophysical Research Letters. 25:289-292.
Voss, H  D, Walt M, Imhof W  L, Mobilia J, Inan US.  1998.  Satellite observations of lightning-induced electron precipitation. Journal of Geophysical Research. 103:11725-11744.
1999
Imhof, W  L, Anderson R  R, Chenette D  L, Mobilia J, Petrinec S  M, Walt M.  1999.  The correlation of rapid AKR variations with changes in the fluxes of precipitating electrons. Advances in Space Research. 23:1747-1752.
2001
Walt, M, Voss H  D, Lev-Tov S  J, Mobilia J, Jahn J-M.  2001.  Diffusion of 155 to 430 keV protons in the Earth's radiation belt. Journal of Geophysical Research. 106:5957-5966.
Blake, J  B, Inan US, Walt M, Bell TF, Bortnik J, Chenette D  L, Christian H  J.  2001.  Lightning-induced energetic electron flux enhancements in the drift loss cone. Journal of Geophysical Research. 106:29733-29744.
Walt, M, Voss H  D.  2001.  Losses of ring current ions by strong pitch angle scattering. Geophysical Research Letters. 28:3839-3842.
2002
Walt, M, Voss H  D, Pickett J  S.  2002.  Electron precipitation coincident with ELF/VLF wave bursts. Journal of Geophysical Research (Space Physics). 107:1207.
2004
Walt, M, Voss H  D.  2004.  Proton precipitation during magnetic storms in August through November 1998. Journal of Geophysical Research (Space Physics). 109:2201.
2009
Gemelos, E  S, Inan US, Walt M, Parrot M, Sauvaud J  A.  2009.  Seasonal dependence of energetic electron precipitation: Evidence for a global role of lightning. Geophysical Research Letters. 36:21107.