1. Landau, L.D., Lifshitz, E.M.: Theory of elasticity. 2nd Edn., p. 161. Oxford, New York: Pergamon Press 1970
2. Leaderman, H.: Elastic and creep properties of filamentous materials and other high polymers. Washington D.C.: The Textile Foundation 1943
3. Frenkel, J.: Kinetic theory of liquids. New York: Dover 1955
4. Rytov, S.M.: Sov. Phys. JETP6, 130, 401, 513 (1958); ibid.27, 147 (1967)
5. Herzfeld, K.F., Litovitz, T.A.: Absorption and dispersion of ultrasonic waves. New York, London: Academic Press 1959