1. Agullo-Lopez, F., Cabrera, J. M. and Agullo-Rueda, F. (1994) Electrooptics: Phenomena, Materials and Applications, Academic Press, New York;
2. Zyss, J. (1993) Molecular Nonlinear Optics: Materials, Physics and Devices, Academic Press, New York.
3. Koshima, H. and Matsuura, T. (1998) J. Synth. Org. Chem. Jpn., 56 268–279;
4. Koshima, H. and Matsuura, T. (1998) J. Synth. Org. Chem. Jpn., 56 466–477;
5. Whitesell, J. K., Davis, R. E., Wong, M.-S. and Chang, N.-L. (1994) J. Am. Chem. Soc.,116 523–527;