1. R.S. Marvin, Ind. Eng. Chem. 44: 696 (1952).
2. J.R. Scott, Physical testing of rubbers, Maclaren & Sons, Ltd., London, 1965.
3. R.W. Whorlow, Rheological Techniques, Ellis Horwood Ltd., Chichester, 1980.
4. J.D. Ferry, Viscoelastic Properties of Polymers, 2nd. ed., John Wiley & Sons, New York etc., 1970, Chapter 5–8.
5. A.J. Staverman and F.R. Schwarzl, in: H.A. Stuart (Ed.), Die Physik der Hochpolymeren, Band IV, Springer Verlag, Berlin, 1956, Chapter I.