1. Yu. M. Shatunov et al., in Proc. of the 7th Eur. Part. Accel. Conf. EPAC 2000, Vienna, Austria, 26–30 Jun., 2000, p. 439.
2. G.M. Tumaĭkin, in Proc. of the 10th Intern. Conf. on Charged Part. Accel., Protvino, 1977, vol. 1, p. 443.
3. P. M. Ivanov et al., in Proc. of Beam—Beam Workshop at Fermilab, Batavia, 2001, Ed. by T. Sen and M. Xiao, p. 36.
4. É. V. Anashkin et al., Prib. Tekh. Eksp. 49, 63 (2006) [Instrum. Exp. Tech. 49, 798 (2006)].
5. V. M. Aulchenko et al., Preprint № 2001–45, Inst. Yad. Fiz. (Inst. Nucl. Phys., Novosibirsk, 2001).