1. P. G. de Gennes, Liquid Crystals (Clarendon, Oxford, 1974).
2. S. A. Pikin, Structural Transformations in Liquid Crystals (Nauka, Moscow, 1981; Gordon and Breach Sci., New York, 1991).
3. Pattern Formation in Liquid Crystals, Ed. by Á. Buka and L. Kramer (Springer, New York, 1996).
4. L. M. Blinov, Electro- and Magnetooptics of Liquid Crystals (Nauka, Moscow, 1978) [in Russian].
5. R. B. Meyer, Phys. Rev. Lett. 22, 918 (1969).