1. J.S. Benjamin, Sci. American, 234 (1976) 40.
2. P.H. Shingu, B. Huang, S.R. Nishitani and S. Nasu, Suppl. to Trans. JIM, 28 (1988) 3.
3. P.H. Shingu, B. Huang, J. Kuyama, K.N. Ishihara and S. Nasu, Proc. DGM Conf. at Calw-Hirsau, West-Germany, 1988, in press.
4. Mössbauer studies on MA powders have been reported already by following references: A.Y. Yermokov, Y.Y. Yurchikov and V.A. Barinov, Phys. Met. Metall. 52 (1981) 50; C. Michaelsen and E. Hellstern J. Appl. Phys. 62 (1987) 117.