D. C. Schram

Hopman, H. J, Boerboom, A. J. H, & Tuithof, H. H. (1975). Some reflection on the focusing of intense charged particle beams. In D. C Schram (Ed.), Proceedings of the Twelfth International Conference on Phenomena in Ionized Gases, Eindhoven, The Netherlands, August 18-22, 1975 ; Part I : Contributed Papers. North-Holland.