1. Toward a theory of phase transitions;Landau;Zh.E.T.F.,1937
2. Landau theory of the nematic-isotropic phase transition;Gramsbergen;Phys. Rep.,1986
3. Phase transitions in liquid crystals;Singh;Phys. Rep.,2000
4. Theory of polar biaxial nematic phases;Mettout;Phys. Rev. E,2002