1. A. A. Abrikosov, L. P. Gor’kov, and I. E. Dzyaloshinskii, Methods of Quantum Field Theory in Statistical Physics, Prentice-Hall, Englewood Cliffs, N. J. (1963).
2. See, for example, R. E. Peierls, Quantum Theory of Solids, Clarendon Press, Oxford (1955).
3. W. A. Harrison, Pseudopotentials in the Theory of Metals, Benjamin, New York (1966).
4. F. G. Moliner, Phil. Mag., 3:207 (1958).
5. G. E. Zil’berman and Ya. E. Aizenberg, Fiz. Metal. Metalloved., 4:216 (1957).