1. V. S. Alexandrov et al., “Numerical Simulation of the 48Ca5+ Ions Transport Along the U-400 Cyclotron’s Injection Line,” in Proc. of the 16th Int. Conf. on Cyc., May 13–17, 2001, East Lansing Michigan, USA, p. 390
2. Yu. Ts. Oganessian et al., “Modernization of the U-400 Axial Injection System,” in Proc. of 19th Russ. Part. Acc. Conf., RUPAC2004, 4–9 Oct., 2004 (Dubna, Russia, 2004), p. 261.
3. I. Kalagin et al., “Status of the FLNR JINR Cyclotrons,” in Proc. of the 2009 Part Acc. Conf. PAC09, May 03–08, Vancouver, BC, Canada.
4. B. N. Gikal et al., “Upgrading of DC-40 Cyclotron,” in Proc. of the 17th Intern. Conf. on Cyc., Cyclotrons04, Oct. 18–22, 2004, Tokyo, Japan.
5. G. G. Gulbekyan et al., “Axial Injection Channel of the DC-72 Cyclotron,” in Proc. of 19th Rus. Particle Acc. Conf., RuPAC2004, 4–9 Oct. (Dubna, Russia, 2004), p. 144.