1. Malliaris, A., Christias, C., Margomenou-Leonidopoulou, G., Paleos, C. M., Mol. Cryst. Liq. Cryst., 1982, 82, 161; and our own unpublished results.
2. Goerdeler, J., in Methoden der Organischen Chemie (Houben Weyl), Müller, E. (Ed.), Vol. XI/2, Georg Thieme Verlag, Stuttgart, 1958, p. 591.
3. Paleos, C. M., Dais, P., Malliaris, A., J. Polym. Sei., Polym. Chem. Ed., in press.
4. Iwamoto, K, Ohnuki, Y., Sawada, K., Send, M., Mol. Cryst. Liq. Cryst., 1981, 73, 95.