1. See, for example, the Proceedings of the International Conference on Magnetism, Munich, 1979, J. Mag. Magn. Mat.15?18, 99?209, (1980); reviews by Mydosh, J.A.: J. Mag. Magn. Mat.7, 237 (1978);
2. Binder, K.: In: Fundamental problems in statistical mechanics, Vol. V Cohen, E.G.D. (ed.) Amsterdam: North-Holland 1980
3. See, for example, Kittel, C: Quantum theory of solids, p. 360, New York: John Wiley and Sons, Inc. 1963
4. For reviews of the Kondo effect see: Kondo, J.: In: Solid state physics, Vol. 23, p. 283 Seitz, F., Turnbull, D., Ehrenreich, H. (eds.). New York: Academic Press Inc. 1969; Fischer, K.H.: In: Springer tracts in modern physics, Vol. 54, p. 1, 1970; Phys. Stat. Solidi B46, 11 (1971); and the contributions in: Magnetism Vol. 5 Suhl, H. (ed.). New York: Academic Press 1973
5. Mydosh, J.A.: AIP Conf. Proc.24, 131 (1975)