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Bell, T. F., and H. D. Ngo, Electrostatic lower hybrid waves excited by electromagnetic whistler mode waves scattering from planar magnetic-field-aligned plasma density irregularities, J. Geophys. Res., 95, 149, 1990.

Carlson, C. W., R. E. Ergun, and M. K. Hudson, Observations of beam generated upperhybrid waves parametrically decaying into whistlers, Eos Trans. AGU, 58, 1214, 1977.

Cartwright, D. E., and P. J. Kellogg, Observations of radiation from an electron beam artificially injected into the ionosphere, J. Geophys. Res., 79, 1439, 1974.

Doe, R. A., M. Mendillo, J. F. Vickrey, L. J. Zanetti, and R. W. Eastes, Observations of nightside auroral cavities, J. Geophys. Res., 98, 293, 1993.

Gough, M. P., and A. Urban, Auroral beam/plasma interaction observed directly, Planet. Space Sci., 31, 875, 1983.

Hughes, J. M., and J. LaBelle, The latitude dependence of auroral roar, J. Geophys. Res., 103, 14911, 1998.

International Association of Geomagnetism and Aeronomy Division I Working Group 1, International geomagnetic reference field: Revision 1985, J. Geomagn. Geoelectr., 37, 1157, 1985.

Kaufmann, R. L., Electrostatic wave growth: Secondary peaks in a measured auroral electron distribution function, J. Geophys. Res., 85, 1713, 1980.

Kellogg, P. J., and S. J. Monson, Radio emissions from the aurora, Geophys. Res. Lett., 6, 297, 1979.

Kellogg, P. J., and S. J. Monson, Further studies of auroral roar, Radio Sci., 19, 551, 1984.

Kelly, J. D., C. J. Heinselman, J. F. Vickrey, and R. R. Vondrak, The Sondrestrom radar and accompanying ground-based instrumentation, Space Sci. Rev., 71, 797, 1995.

LaBelle, J., and A. T. Weatherwax, Ground-based observations of LF/MF/HF radio waves of auroral origin, in Physics of Space Plasmas (1992), edited by T. Chang, p. 223, Scientific, Cambridge, Mass., 1992.

LaBelle, J., M. L. Trimpi, R. Brittain, and A. T. Weatherwax, Fine structure of auroal roar emissions, J. Geophys. Res., 100, 21,953, 1995.

LaBelle, J., S. G. Shepherd, and M. L. Trimpi, Observations of auroral medium frequency bursts, J. Geophys. Res., 102, 22,221, 1997.

Shepherd, S. G., J. LaBelle, and M. L. Trimpi, The polarization of auroral radio emissions, Geophys. Res. Lett., 24, 3161, 1997.

Shepherd, S. G., J. LaBelle, and M. L. Trimpi, Further investigation of auroral roar fine structure, J. Geophys. Res., 103, 2219, 1998.

Weatherwax, A. T., Ground-based observations of auroral radio emissions, Ph.D. thesis, Dartmouth Coll., Hanover, N. H., 1994.

Weatherwax, A. T., J. LaBelle, M. L. Trimpi, and R. Brittain, Ground-based observations of radio emissions near $2f_{ce}$ and $3f_{ce}$ in the auroral zone, Geophys. Res. Lett., 20, 1447, 1993.

Weatherwax, A. T., J. LaBelle, and M. L. Trimpi, A new type of auroral radio emission observed at medium frequencies (~1350-3700 kHz) using ground-based receivers, Geophys. Res. Lett., 21, 2753, 1994.

Weatherwax, A. T., J. LaBelle, M. L. Trimpi, R. A. Treumann, J. Minow, and C. Deehr, Statistical and case studies of radio emissions observed near $2f_{ce}$ and $3f_{ce}$ in the auroral zone, J. Geophys. Res., 100, 7745, 1995.

Weber, E. J., J. F. Vickrey, H. Gallagher, L. Weiss, C. J. Heinselman, R. A. Heelis, and M. C. Kelley, Coordinated radar and optical measurements of stable auroral arcs at the polar cap boundary, J. Geophys. Res., 96, 17,847, 1991.

Willes, A. J., S. D. Bale, and Z. Kuncic, A z mode electron-cyclotron maser model for bottomside ionospheric harmonic radio emissions, J. Geophys. Res., 103, 7017, 1998.

Yoon, P. H., A. T. Weatherwax, T. J. Rosenberg, and J. LaBelle, Lower ionospheric cyclotron maser theory: A possible source of $2f_{ce}$ and $3f_{ce}$ auroral radio emissions, J. Geophys. Res., 101, 27,015, 1996.

Yoon, P. H., A. T. Weatherwax, and T. J. Rosenberg, On the generation of auroral radio emissions at harmonics of the lower ionospheric electron cyclotron frequency: X, O, and Z mode maser calculations, J. Geophys. Res., 103, 4071, 1998a.

Yoon, P. H., A. T. Weatherwax, T. J. Rosenberg, J. LaBelle, and S. G. Shepherd, Propagation of medium frequency (1-4 MHz) auroral radio waves to the ground via the Z-mode radio window, J. Geophys. Res., 103, 29,267, 1998b.

Simon Shepherd 2002-05-31