1. G. M. Bartenev, Dokl. Akad. Nauk SSSR 76, 227 (1951).
2. M. V. Vol’kenshtein and O. B. Ptitsyn, Dokl. Akad. Nauk SSSR 103, 795 (1955).
3. M. V. Vol’kenshtein and O. B. Ptitsyn, Zh. Tekh. Fiz. 26, 2204 (1956).
4. J. D. Ferry, Viscoelastic Properties of Polymers (Wiley, New York, 1961).
5. D. S. Sanditov and G. M. Bartenev, Physical Properties of Disordered Structures (Nauka, Novosibirsk, 1982) [in Russian].