1. ‘High perveance hollow electron beam study’, Massachusetts Institute of Technology Quarterly Progress Report, Report 70, Research Laboratory of Electronics, 1963 p. 43–57
2. ‘High perveance hollow electron beam study’, Massachusetts Institute of Technology Quarterly Progress Report, Report 71, Research Laboratory of Electronics, 1963 p. 45–50
3. Poeltinger, A.: ‘Experimental study of a high-perveance, hollow electron beam’, September, 1962, M.Sc. dissertation, Massachusetts Institute of Technology