1. Chemla, D. S. & Zyss, J. (eds) Nonlinear Optical Properties of Organic Molecules and Crystals(Academic, Orlando, (1987)).
2. Marder, S. R., Sohn, J. E. & Stucky, G. D. (eds) Materials for Nonlinear Optics: Chemical Perspectives(Vol. 455, ACS Symp. Ser., Am. Chem. Soc., Washington DC, (1991)).
3. Peyghambarian, N., Koch, S. W. & Mysyrowicz, A. Introduction to Semiconductor Optics(Prentice-Hall, Englewood Cliffs, (1993)).
4. Buckingham, A. D. Permanent and induced molecular moments and long-range intermolecular forces. Adv. Chem. Phys. 12, 107–142 (1967).
5. Oudar, J. L. & Chemla, D. S. Hyperpolarizabilities of the nitroanilines and their relations to the excited state dipole moment. J. Chem. Phys. 66, 2664–2668 (1977).