1. Chung, Woon-Hyuk, Sheppard, D.M., Olsen, W.C., Robertson, B.C.: Can. J. Phys.51, 1840 (1973)
2. Wiest, J.E., Robertson, C., Gabbard, F., McEllistrem, M.T.: Phys. Rev. C4, 2061 (1971)
3. Goodman, A.S., Donahue, D.J.: Phys. Rev. C5, 875 (1972)
4. Maripuu, S.: Nucl. Phys. A149, 593 (1970)
5. McCullen, J.D., Bayman, B.F., Zamick, L.: Phys. Rev. B515, 134 (1964)