1. Brovman, E. G., Kagan, Yu., and Kholas, A., 1970, The compressibility problem and violation of the Cauchy relations in metals, Zh. Eksp. Teor. Fiz. 57: 1635.
2. Brovman, E. G., Kagan, Yu. M., 1974, Phonons in nontransition metals, Usp. Fiz. Nauk 112: 369.
3. Feynman, R. P., 1939, Forces in molecules, Phys. Rev. 56: 340. Usp. Fiz. Nauk 112: 369.
4. Feynman, R. P., 1939, Forces in molecules, Phys. Rev. 56: 340.
5. Finnis, M. W., 1974, Energy and elastic-constants of simple metals in terms of pairwise interactions, J. Phys. F. 4: 1645.