1. Hilyard NC, Cunningham A (eds) (1994) Low density cellular plastics physical basis of behavior. Chapman and Hall, New York
2. Randall D, Lee S (eds) (2002) The polyurethanes book—Huntsman polyurethane. Wiley, New York
3. Kim SH, Park HC, Jeong HM, Kim BK (2010) J Mater Sci 45:2675. doi: 10.1007/s10853-010-4248-3
4. Hararak B, Prakymoramas N, Rungseesantivanon W, Thamumjitr D (2010) In: Suttiruengwong S, Sricharussin W (eds) Advanced material research-functionalized and sensing materials. Trans Tech Publishing, Bangkok, Thailand
5. Nikje MMA (2010) Polym Eng Sci 50:468