1. N. Grewe, F. Steglich, in: K.A. Gschneidner, Jr., L. Eyring (Eds.), Handbook on the Physics and Chemistry of Rare Earths, vol. 14, Elsevier, Amsterdam, 1991, p. 343
2. J. Sereni, in: K.A. Gschneidner, Jr., L. Eyring, (Eds.), Handbook on the Physics and Chemistry of Rare Earths, vol. 15, Elsevier, Amsterdam, 1991, p. 1
3. Non-Fermi liquids
4. See, for instance, P. Coleman, M.B. Maple, A.J. Millis (Eds.), in: Proceedings of the Conference of NFL Behaviour in Metals, Santa Bárbera, J. Phys.: Condens. Matter 8 (48) (1996)
5. P.Watcher, in: K.A. Gschneidner Jr., L. Eyring, Handbook on the Physics and Chemistry of Rare Earths, vol. 19, Elsevier, Amsterdam, 1994, p. 177