1. G. N. Flerov and Yu. Ts. Oganessian, in Proc. Sympos. on the Chemistry of Transuranium Elements, Moscow, Sept. 1972, J. Inorg. Nucl. Chem. Suppl. 1976, p. 131.
2. G. N. Flerov, in Proc. Int. Conf. on Reactions between Complex Nuclei, Nashville, June 1974, North-Holland Amsterdam 1974, p. 459.
3. G. N. Flerov, in Proc. Int. Conf. on Selected Topics in Nuclear Structure, Dubna, June 1976, Vol. 2, p. 3; engl. transl. JINR-E7-10128 (1976).
4. W. Br�chle et al., GSI Annual Report 1977, and to be published.
5. M. Sch�del et al., GSI Annual Report 1977, and to be published.