1. S. Chandrasekhar,Liquid Crystals(Cambridge University Press, Cambridge, 1977).
2. P. G. de Gennes and J. Prost,The Physics of Liquid Crystals, 2nd ed. (Clarendon, Oxford, 1993).
3. P. J. Collings and M. Hird,Introduction to Liquid Crystals(Taylor and Francis, London, 1997).
4. See, for example,Physical Properties of Liquid Crystals, edited by D. Demus, J. Goodby, G. W. Gray, H.-W. Spiess, and V. Vill (Wiley-VCH, Weinheim, 1999).
5. Phase transitions in liquid crystals