Affiliation: | (1) Laboratory of Theoretical Physics, Joint Institute for Nuclear Research Dubna, Head Post Office Box 79, SU-101000 Moscow, USSR;(2) Gomel Polytechnical Institute, SU-246746 Gomel, USSR;(3) Institute for Nuclear Physics, Uzbek Acad. of Sciences, SU-702132 Ulugbek, Tashkent, USSR |