1. D. I. Blokhintsev, Sov. Phys. JETP 6, 995 (1958).
2. A. M. Baldin et al., Sov. J. Nucl. Phys. 18, 41 (1973)
3. Yu. D. Bayukov et al., Sov. J. Nucl. Phys. 18, 639 (1973)
4. V. S. Stavinskiy, Soobshch. OIYaI No. R2-80-767 (Dubna, 1980)
5. S. V. Boyarinov et al., Phys. At. Nucl. 57, 1379 (1994).