1. A. M. Baldin, Dokl. Akad. Nauk SSSR 222, 1064 (1975) [Sov. Phys.Dokl. 20, 418 (1975)]; Dokl. Akad. Nauk SSSR 279, 1352 (1984) [Sov. Phys. Dokl. 29, 1031 (1984)].
2. I. L. Kiselevich et al., Yad. Fiz. 57, 2225 (1994) [Phys. At. Nucl. 57, 2140 (1994)].
3. V. I. Mikhailichenko et al., Yad. Fiz. 62, 1787 (1999) [Phys. At. Nucl. 62, 1665 (1999)].
4. V. A. Okorokov et al., in Proc. of the Sci. Session MIFI-2000 (MIFI, Moscow, 2000), Vol. 7, pp. 218, 220.
5. V. Chaloupka et al., Phys. Lett. B 44, 211 (1973); M. G. Gornov et al., Yad. Fiz. 25, 606 (1977) [Sov. J. Nucl. Phys. 25, 322 (1977)]; Yad. Fiz. 27, 1578 (1978) [Sov. J. Nucl. Phys. 27, 831 (1978)]; I. L. Kiselevich, Candidate’s Dissertation in Mathematics and Physics (IT ÉF, Moscow, 1995).