A. M. Buckicy, P. J. Christiansen, S. C. Chapman, and P. Devine, Beam-plasma simulations of varying wave dispersion applied to the Earth's electron foreshock, Eos Trans. A GU, vol.74, p.494, 1993.

T. M. Burinskaya and C. V. Meister, Contribution for the ion-beam acoustic instability to the generation of broadband electrostatic noise in the Earth's magnetotail, Planet. Space Sci, vol.37, p.145, 1989.

I. H. Cairns, The electron distribution upstream from the Earth's bow shock, J. Geoph?ts. Res, vol.9, p.2315, 1987.

I. H. Cairns and S. F. Fung, Growth of electron plasma waves above and below fp in the electron foreshock, J. Geoph?ts. Res, vol.93, p.7307, 1988.

P. Canu, Linear study of the beam-plasma interaction as a source mechanism for the broadband electrostatic emissions observed in the electron foreshock, J. Geoph?ts. Res, vol.94, 1989.

C. T. Dum, Transition in the dispersive properties of beamplasma and two-stream instabilities, J. Geoph?ts. Res, vol.9, p.2429, 1989.

C. T. Dum, Simulation studies of plasma waves in the electron foreshock: The generation of downshifted oscillations, J. Geoph?ts. Res, vol.95, p.8123, 1990.

J. Etcheto and M. Faucheux, Detailed study of electron plasma waves upstream of the Earth's bow shock, J. Geoph?]s. Res, vol.89, p.6631, 1984.

P. C. Filbert and P. J. Kellogg, Electrostatic noise at the frequency beyond the Earth's bow shock, J. Geoph?]s. Res, vol.85, p.1369, 1979.

R. J. Fitzenreiter, A. J. Klimas, and J. D. Scudder, Detection of bump-on-tail reduced electron velocity distributions at the electron foreshock boundary, J. Geoph?]s. Res, vol.11, p.496, 1984.

R. J. Fitzenreiter, J. D. Scudder, and A. J. Klimas, Threedimensional analytical model for the spatial variation of the foreshock electron distribution function: Systematics and comparison with ISEE observations, J. Geoph?]s. Res, vol.95, p.4155, 1990.

S. A. Fuselier, D. A. Gurnett, and R. J. Fitzenreiter, The downshift of electron plasm oscillations in the electron foreshock region, J. Geoph?]s. Res, vol.90, p.3935, 1985.

A. A. Gmeev and R. Z. Sagdeev, Theory of weakly turbulent plasma, Handbook of Plasma Ph?]sics, p.692, 1983.

P. Gary, Electrostatic instabilities in plasma with two electron components, J. Geoph?]s. Res, vol.90, p.9213, 1985.

C. A. Lacombe, C. C. Mangehey, C. C. Harvey, and J. ,

. Scudder, Electron plasma waves upstream of the Earth's bow shock, J. Geoph?]s. Res, vol.90, p.73, 1985.

N. G. Matsiborko, I. N. Onischenko, V. D. Shapiro, and V. I. Shevchenko, Nonlinear interaction of the monochromatic electron beam with the plasma particle, 1972.

E. Marsh, Beam driven electron acoustic waves upstream of the Earth's bow shock, MikhaJlovskii, A.B., Theo? of Plasma Instabilities, vol.90, p.62, 1974.

T. G. Onsager and R. , Measurements of the electron beam mode in Earth's foreshock, J. Geoph?]s. Res, vol.95, p.4175, 1990.

D. Schriver and M. Ashour-abdalla, Broadband electrostatic noise due to field-aligned currents, J. Geoph?]s. Res, vol.16, p.899, 1989.

A. I. Akhiezer, I. A. Akhiezer, R. V. Polovin, A. G. Sitenko, and K. N. Stepanov, Plasma Electrodynamics, vol.2, p.54, 1975.

P. M. Au, Laboratoire de Physique et chimie de l'Environnement terrestre et plan?taire, vol.45071