1. W.Buckel: Z. Phys. 138,136 (1954)
2. W. Buckel, R. Hilsch: Z. Phys. 138, 109 (1954)
3. W. Klement, R. H. Willens, P. Duwez: Nature 187, 809 (1960)
4. For recent reviews see, e.g., H.J.Güntherodt: In Advances in Solid State Physics, Vol. XVII, ed. by H.J.Treusch (Vieweg, Braunschweig, 1977) p. 25
5. See also Proc. of the 3rd Int. Conf on Rapidly Quenched Metals, ed. by B. Cantor (The Metals Society, London 1978)