1. Ajzenberg-Selove, F.: Nucl. Phys. A281, 1 (1977)
2. Fulbright, H.W., Robbins, J.A., Blann, M., Fleming, D.G., Pendl, H.S.: Phys. Rev.184, 1068 (1968)
3. Fulbright, H.W., Freiesleben, H.: Nuclear Structure Research Laboratory, Rochester, Annual Report, 1974; Bull. Am. Phys. Soc.18, 550 (1973)
4. We thank, H. Wirth, Max-Planck-Institut f�r Kernphysik, Heidelberg, for supplying us with the target
5. Fulbright, H.W., Freiesleben, H.: Nucl. Instr. Meth.115, 83 (1974)