1. J. A. Stone and W. L. Pillinger, Phys. Rev. Lett.,13, No. 6, 200 (1964).
2. I. V. Gordeev, D. A. Kardashe, and A. V. Malyshev, Nuclear Constants [in Russian], Gosatomizdat (1963).
3. M. A. Bak, A. S. Krivokhatskii, and Yu. F. Romanov, Atomnaya Energiya,23, No. 6, 561 (1967).
4. J. Prawitz and J. Rydberg, Acta Chem. Scand.,12, 377 (1958).