1. Limiting Stable Current in Electron Beams in the Presence of Ions
2. Linear longitudinal oscillations in collisionless plasma diodes with thin sheaths. Part II. Application to an extended Pierce-type problem
3. C. K. Birdsall and W. B. Bridges,Electron Dynamics of Diode Regions(Academic, New York, 1966).
4. Unstable oscillatory Pierce modes of neutralized electron beams
5. B. B. Godfrey,The Pierce Instability and Bifurcating Equilibria, National Technical Information Service Document No. AD-PB87143178∕AS(Mission Research Corporation, Rep. AMRC-R-282, Albuquerque, 1981). Copies may be ordered from the National Technical Information Service, Springfield, VA 22161. The price is $9.95 plus a $3.00 handling fee. All orders must be prepaid.