1. G. Albout and N. Poffé: private communication; N. Poffé:Thesis (Paris, 1964).
2. G. Gersohel, M. Pautrat, R. A. Ricci, J. Teillac and J. Van Horenbeeck:Congrès Int. de Physique Nucléaire (Paris, 1964).
3. R. M. Chanda, J. E. Clarkson and R. K. Sheline:3rd Conference on Reactions Between Complex Nuclei (Asilomar, 1963).
4. E. Mabshalek, L. W. U. Person and R. K. Sheline:Rev. Mod. Phys.,35, 108 (1963).
5. L. V. Fagg:Phys. Rev.,109, 100 (1958).