1. Alfrey, T.: Mechanical Behaviour of High Polymers. New York: Interscience Publishers, 1948.
2. Debye, P.: Polare Molekeln. Leipzig: Hirzel, 1929.
3. Leaderman, H.: Elastic and Creep Properties of Filamentous Materials and Other High Polymers. Washington: The Textile Foundation, 1943.
4. Tobolsky, A. V. u. R. D. Andrews: J. Chem. Physics 13, 3 (1945).
5. Ferry, J. D.: J. Amer. Chem. Soc. 72, 3746 (1950).