1. V. G. Soloviev, Theory of Atomic Nuclei: Quasiparticle and Phonons (Energoatomizdat, Moscow, 1989; Inst. of Physics, Bristol, 1992).
2. J. Raynal and J. Revai, Nuovo Cimento A 68, 612 (1970).
3. R. I. Jibuti and N. B. Krupennikova, Method of Hyperspherical Functions in Quantum Mechanics (Metsniereba, Tbilisi, 1984) [in Russian].
4. Ya. A. Smorodinskii and V. D. Efros, Sov. J. Nucl. Phys. 17, 107 (1973).
5. J. Raynal, Nucl. Phys. A 259, 272 (1976).