1. Chaurasia PBL (1981) Res Ind 26:159
2. Colvin DP, Mulligan JC (1990) US Patent 4,911,232
3. Lennox-kerr P (1998) Techn Text Int 7:25
4. You M, Zhang XX, Li W et al (2008) Thermochim Acta 472:20
5. Zhang XX, Li Y, Tao XM, Yick KL (2005) Indian J Fiber Textile Res 30:377