1. Viscosity and Consistency of Impression Rubbers
2. Gaylord, N.G.: Polyethers (High Polymers), in Polyalkylene Oxides and Other Polyethers, New York: Interscience , 1963, pp 309-310, 315-319.
3. Skinner, E.W., and Phillips, R.W.: The Science of Dental Materials, 6th ed, Philadelphia : W.B. Saunders and Co. , 1960, p 142.
4. Viscoelastic Properties of Some Denture Base Materials
5. Crank, J.: The Mathematics of Diffusion, 2nd ed, Oxford: Oxford University Press, 1957, p 54.