1. J. Zyss , in Molecular Nonlinear Optics: Materials, Physics, and Devices, Academic Press, New York, 1993
2. F. Agullo-Lopez , J. M.Cabrera and F.Agulló-Rueda, in Electrooptics: Phenomena, Materials and Applications, Academic Press, New York, 1994
3. G. R. Desiraju , in Crystal Engineering: the Design of Organic Solids, Elsevier, New York, 1989
4. M. E. Lines and A. M.Glass, in Principles and Applications of Ferroelectrics and Related Materials, Oxford University Press, USA, 2001
5. K. Uchino , in Ferroelectric Devices, Marcel Dekker, New York, 2000