1. Isotropic-Nematic Phase Transition in Liquid Crystals
2. Gennes, P.G. de. 1974.The Physics of Liquid Crystals, 109–109. Clarendon.
3. Ma, S.S. 1976.Modern Theory of Critical Phenomena, 87 ff–87 ff. Benjamin.
4. Gennes, P.G. de. 1974.The Physics of Liquid Crystals, 103–103. Clarendon.