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