1. A.M. Ray, J.P. Dykstra and R.B. Simonton, these proceedings (9th Int. Conf. on Ion Implantation Technology, Gainesville, FL, U.S.A., 1992)
2. R.B. Simonton, these proceedings (9th Int. Conf. on Ion Implantation Technology, Gainesville, FL, U.S.A., 1992)
3. Ion Beams with applications to ion implantation;Wilson,1973
4. Aspects of the physics, chemistry, and technology of high intensity heavy ion sources
5. The Physics and Technology of Ion Sources;Keller,1989