1. P. de Gennes, The Physics of Liquid Crystals (Clarendon Press, Oxford, 1974; Mir, Moscow, 1977).
2. A. P. Kapustin and O. A. Kapustina, Acoustics of Liquid Crystals (Nauka, Moscow, 1986).
3. E. Guyon and P. Pieranski, J. Phys. Colloq. 36(C1–3), 203 (1975).
4. E. Dubois-Violette, E. Guyon, I. Janossy, et al., J. Mech. 16(5), 733 (1977).
5. Yu. V. Bocharov, I. N. Gurova, and O. A. Kapustina, Mol. Cryst. Liq. Cryst. 209, 19 (1991).