1. Tsutsumi N, Nagata M. In: Salnmone JC, editor. Encyclopedia of polymeric materials. CRC Press, 1996. p. 6110
2. Tirrell DA. In: Kreschwitz JI, editor. Encyclopedia of polymer science and engineering, 2nd ed. New York: Wiley, vol. 14. p. 192
3. Plazek DJ, Ngai KL. In: Mark JE, editor. Physical properties of polymers: handbook. New York: AIP Press, 1996. p. 139
4. Van Krevelen DW. Properties of Polymers: their Correlation with Chemical Structure; their Numerical Estimation and Prediction from Additive Group Contributions. 3rd ed. New York: Elsevier Science, 1990