1. [1] A. Senda, T. Nakagawa, Y. Takano, and T. Kasanami, Hyomen Gijutsu, 43, 324-9 (1992).
2. [2] A. Senda, T. Nakagawa, and Y. Takano, Hyomen Gijutsu, 43, 589-94 (1992).
3. [3] A. Senda, T. Nakagawa, and Y. Takano, Hyomen Gijutsu, 43, 694-9 (1992).
4. [4] A. Senda, T. Nakagawa, and Y. Takano, Hyomen Gijutsu, 43, 967-72 (1992).
5. [5] Y. Suzuoka, A. Ohki, T. Mizutani, and M. Ieda, J. Phys. D. Appl. Phys., 20, 511-7 (1987).