1. C.A. Finch, ‘Properties and Applications of Polyvinyl Alcohol’. 1973: Chichester, John Wiley & Sons.
2. K. Noro, Chapters 3 & 4 in Ref. 1.
3. K. Toyoshima, Ref. 1, p.341.
4. R.K. Tubbs and Ting Kai Wu, in Ref.1, p.177.
5. T. Motoyama and S. Okamura, Kobunshi Kagaku, 1954, 11, 23 (CA, 50, 2200).