1. T. Broome, Proc. ICANS-XII, T-20, Rutherford Appleton Laboratory, RAL94-025, 1994.
2. K. Kondo, K. Hozumi, KENS Report-II, 381, KEK, 1981.
3. K. Katoh, et al., KEK Internal 81-12, KEK, 1982 (in Japanese).
4. S. Ban, et al., KEK Internal 84-4, KEK, 1984 (in Japanese).
5. T. Ino, et al., Proc. Seventh ISSP Int. Symp., PS-3, 1998.