1. Koskenmaki, D.C., Gschneidner, K.A.: Cerium. Handbook on the Physics and Chemistry of the Rare Earths. Gschneidner, Jr., K.A., Eyring, L. (eds.) Vol. 1, p. 337. Amsterdam, New York, North Holland 1978
2. Ramirez, R., Falicov, L.M.: Phys. Rev. B3, 2425 (1971)
3. Maple, B., DeLong, L., Sales, B.C.: Kondo effect: alloys and compounds. Handbook on the Physics and Chemistry of the Rare Earths. Gschneidner, Jr., K.A., Eyring, L. (eds.), Vol. 1, p. 797. Amsterdam, New York: North Holland 1978
4. Hiebl, K., Rogl, P., Sienko, M.J.: Inorg. Chem.21, 1128 (1982)
5. Rogl, P.: Phase equilibria in ternary and higher order systems containing rare earth elements and silicon. In: Handbook on the Physics and Chemistry of Rare Earths. Gschneidner, Jr., K.A., Eyring, L. (eds.), Vol. 7. Amsterdam, New York: North Holland (in press)