1. Y.F. Hsia, Q.J. Yang, F.S. Li, G.L. Zhang and X.L. Ni, eds.,Proc. of ICAME 1991, Nanjing, Hyp. Int. 68–71 (1991/1992).
2. Y. Yonekura, T. Toriyama, J. Itoh and K. Hisatake, Hyp. Int. 15/16 (1983) 1005; T. Toriyama and K. Ueoka, Hyp. Int. 29 (1986) 1525.
3. N. Hayashi, T. Toriyama, I. Sakamoto and K. Histake, J. Phys.: Condensed Matter 1 (1989) 3849.
4. K. Omata, Y. Fujita, N. Yoshikawa, M. Sekiguchi and Y. Shida,Proc. IEEE 7th Real Time '91 on Computer Applications in Nuclear, Particle and Plasma Physics, Jülich, 1991, p. 243.
5. T. Toriyama, K. Ueoka, T. Hashimoto, K. Hisatake and K. Kitayama, Hyp. Int. 69 (1991) 771.