1. R. J. Briggs,Electron Stream Interaction with Plasmas(MIT, Cambridge, MA, 1964).
2. Instabilities: Convective versus Absolute
3. A. Bers, inHandbook of Plasma Physics(gen. eds. M. W. Rosenbluth and R. Z. Sagdeev),Vol. 1, Basic Plasma Physics(vol. eds. A. A. Galeev and R. N. Sudan) (North-Holland, Amsterdam, 1983), Chap. 3.2.
4. Dissipation of Currents in Ionized Media
5. R. J. Briggs, inAdvances in Plasma Physics, edited by A. Simon and W. B. Thompson (Wiley, New York, 1971), Vol. 4, p. 43.