1. [1] J. Numazawa, Y. Yoneda, F. Aruga and I. Horiuchi : IEICE Technical Report, MR88-14 (1988)
2. [2] Y. Nakamura, K. Yamakawa and S. Iwasaki : IEEE Trans. Magn., MAG-21, 5, 1578 (1985)
3. [3] N. Hayashi, S. Yoshimura and J. Numazawa : Digest of 12th Annual Conference on Magnetics in Japan, 1aD-8 (1988)
4. [4] N. Hayashi, S. Yoshimura and J. Numazawa : Spring National Convention Record of IEICE Japan, SC-2 (1989)
5. [5] C.D. Wagner, Riggs, Lebavis, J.F. Moulder and G.E. Muilenberg : "Handbook of x-ray photoelectron spectroscopy", Perkin Elmer Corp., Physical electronics div. (1979)