1. P.G. de Gennes, The Physics of Liquid Crystals, Clarendon Press, Oxford (1974).
2. S. Chandrasekhar, Liquid Crystals, Cambridge University Press, London-New York (1977).
3. S.P. Papkov and V.G. Kulichikhin, The Liquid-Crystalline State of Polymers [in Russian], Khimiya, Moscow (1977).
4. A. Blumstein (editor), Liquid-Crystalline Order in Polymers, Academic Press, New York (1978).
5. M. Gordon and N.A. Platé (editors), Adv. Polym. Sci., 59, 60/61 (1984).