1. Tabellen der Elektronenphysik, Ionenphysik and Übermikroskopie, M. von Ardenne;von Ardenne,1956
2. See, for example, Thermonuclear Project Semiannual Report ending January 1959, p. 54. ORNL 2693. Later discussions of the uses and development of these sources may be found in other Thermonuclear Division Progress Reports.
3. Duo Plasmatron Ion Source for Use in Accelerators