1. B. Gross, ?Mathematical Structure of the Theories of Viscoelasticity (Hermann, Paris, 1968).
2. J. D. Ferry, ?Viscoelastic Properties of Polymers?, 2nd edn (Wiley and Sons, New York, 1970).
3. S. Havriliak andS. Negami,J. Polym. Sci. C14 (1966) 99.
4. K. S. Cole andR. H. Cole,J. Chem. Phys. 9 (1941) 341.
5. D. W. Davidson andR. H. Cole,ibid. 19 (1951) 1484.