1. Handbook of Liquid Crystals, Demus, D., Goodby, J., Gray, G.W., Spiess, H.-W., and Vill, V., Eds., Weinheim: Wiley, 1998.
2. Flory, P.J., Mater. Res. Soc. Symp. Proc., 1989, vol. 134, no. 1, p. 3.
3. Chandrasekhar, S., Liquid Crystals, Cambridge: Cambridge Univ. Press, 1977.
4. Tsvetkov, N.V., Zuev, V.V., Ksenofontov, I.V., and Tsvetkov, V.N., Liq. Cryst., 1998, vol. 25, no. 6, p. 727.
5. Kilian, H.G., Metzler, R., and Zink, B., J. Chem. Phys., 1997, vol. 107, no. 20, p. 8697.