1. A. N. Guz', Stability of Elastic Bodies under Finite Deformations [in Russian], Naukova Dumka, Kiev (1973).
2. A. N. Guz', F. G. Makhort, and O. P. Gushcha, Introduction to Acoustical Elasticity [in Russian], Naukova Dumka, Kiev (1977).
3. B. P. Maslov, ?Third order macroscopic elastic moduli,? Prikl. Mekh.,15, 57?61 (1979).
4. B. P. Maslov and L. P. Khoroshun, ?Effective characteristics of elastic physically nonlinear inhomogeneous media,? Izv. Akad. Nauk SSSR, Mekh. Tverd. Tela, 149?154 (1977).
5. C. Truesdell, A First Course in Rational Continuum Mechanics, Academic Press, New York (1972).