1. these Proceedings (7th Int. Conf. on Heavy Ion Accelerator Technology);Cavenago,1996
2. G. Bisoffi, A. Pisent and A. Lombardi, in preparation.
3. G. Bisoffi et al., 1994 LINAC Conf. Tsukuba, pp. 774–776.
4. L. Badan et al., Proc. EPAC'94, London, p. 143.