1. P. de Gennes, The Physics of Liquid Crystals (Clarendon, Oxford, 1974; Mir, Moscow, 1977).
2. L. M. Blinov, Electro-Optical and Magneto-Optical Properties of Liquid Crystals (Nauka, Moscow, 1978; Wiley, New York, 1983).
3. A. S. Sonin, Introduction to the Physics of Liquid Crystals (Nauka, Moscow, 1983) [in Russian].
4. A. N. Chuvyrov, Kristallografiya 25, 326 (1980) [Sov. Phys. Crystallogr. 25, 188 (1980)].
5. L. M. Blinov and A. A. Sonin, Zh. Éksp. Teor. Fiz. 87, 476 (1984) [Sov. Phys. JETP 60, 272 (1984)].