1. Energetics of the thermoelastic effect in solids
2. A. Ishihara, Statistical Physics (World, Moscow, 1973).
3. N.N. Bogolyubov, Yu.A. Mitropolsky, Asymptotic Methods in the Theory of Nonlinear Oscillations (State Edition of Technical and Theoretical Literature, Moscow, 1955).
4. R. Feynman, Statistical mechanics (World, Moscow, 1975).