1. R. S. Hemsworth, Proceedings of the 16th SOFE, Urbana-Champaign, IL, Oct. 1995.
2. M. Kuriyama in Ref. 1.
3. M. Fumelli, Proceedings of the 16th Symposium Prod. and Neutr. of Negative Ions, Brookhaven, New York, 1992.
4. T. Inoue, JAERI-TECH94-007, 1994.
5. P. Massmann, Proceedings of the 16th SOFE, Urbana-Champaign, IL, Oct. 1995, p. 475.