1. R. Seki and C.E. Wiegand, Ann. Rev. Nucl. Sci., 25, 241 (1975); L. Tauscher, Proceedings of the Conference on High-Energy Physics and Nuclear Structure, Sante Fe 1975, p. 541, AIP Conference Proceedings No. 26; G. Backenstoss, Ann. Rev. Nucl. Sci., 20, 467 (1970).
2. C.E. Wiegand and D.A. Mack, Phys. Rev. Lett., 18, 685 (1967).
3. 1. D.E. Wilkinson, Proceedings of Rutherford Jubliee International Conference, Ed. J.B. Birks, Academic Press 1960
4. 2. Proceedings of International Conference on Nuclear Structure, Tokyo, Japan 1967. Physical Society of Japan.
5. M.Y. Chen et al., Nuclear Phys., A254, 413 (1975).