1. H. A. Barnes, J. F. Hutton and K. Walters, An Introduction to Rheology, Elsevier, Amsterdam, 1989, Ch. 5.
2. D. F. James, in Recent Developments in Structured Continua, Vol 2, D. De Kee and P. N. Kaloni (Eds), Longman, Essex, 1990, Ch. 12.
3. J. M. Dealy, J. Rheology, 1984, 28, 181.
4. R. B. Bird, R. C. Armstrong and O. Hassager, Dynamics of Polymeric Liquids, Vol 1, Wiley-Interscience, New York, 1987.
5. J. Non-Newtonian Fluid Mech., 1988, 30, 97.