References
- Poeti , G. , Fanelli , E. and Braghetti , M. 1978 . Mol. Cryst. Liq. Cryst. , 45 : 145
- Poeti , G. , Fanelli , E. and Braghetti , M. 1980 . Mol. Cryst. Liq. Cryst. , 61 : 163
- Seurin , P. , Guillon , D. and Skoulios , A. 1981 . Mol. Cryst. Liq. Cryst. , 65 : 85
- Goodby , J. W. 1981 . Mol. Cryst. Liq. Cryst. , 72 : 95
- Poeti , G. , Fanelli , E. and Guillon , D. 1982 . Mol. Cryst. Liq. Cryst. , 82 : 107
- Seurin , P. , Guillon , D. and Skoulios , A. 1981 . Mol. Cryst. Liq. Cryst. , 65 : 65
- Sackmann , H. 1980 . “Liquid Crystals of One and Two-dimensional Order” , Edited by: Helfrich , W. and Heppke , G. Vol. 19 , Berlin : Springer-Verlag .