1. de Gennes, P.G. and Prost, J. (1993) The Physics of Liquid Crystals. Clarendon Press, Oxford.
2. Hartshorn, N.H. (1974) The Microscopy of Liquid Crystals. Microscope Publications, London.
3. Haudin, J.M. (1986) in Optical Properties of Polymers, Meeten, G.H. (ed.) Elsevier, Essex, p. 167.
4. Bellare, J.R, Davis, H.T., Miller, W.G. and Scriven, L.E. (1990) J. Coll. Interf. Sci.
136, 305.
5. Smalyukh, I.I., Shiyanovskii, S.V. and Lavrentovich, O.D. (2001) Chem. Phys. Lett., 336, 88.