1. D.A. Swenson, Proceedings of the 1994 Linac Conference, Tsukuba, Japan, August 21–26, 1994, p. 804.
2. U. Ratzinger. Proceedings of the 1988 Linac Conference, October 3–7, Newport News, Virginia, CEBAF Report 89-001, 1988, p. 185.
3. P.N. Ostroumov, et al., Proceedings of the 2001 PAC Conference, June 18–22, Chicago, IL, USA, 2001, p. 4077.
4. Development of axisymmetric rf focusing effects for an ion linac