1. Ting, R. Y., O. K. Kim Amer. Chem. Soc., Div. Org. Coatings Plast. Chem. Pap.32, 270 (1972).
2. Dschagarowa, E., G. Mennig, Fortschr.-Ber. VDI-Z. Reihe 7/41 (1976).
3. Hoyt, J. W. J. Polymer Sci.B9, 851 (1971).
4. Lee, T. S., Proc. (Fifth) Intern. Congr. on Rheology, Vol. 4 (Tokyo 1970).
5. Fisher, D. H., F. Rodriguez J. Appl. Polymer Sci.15, 2975 (1971).