1. P. Günter and J. P. Huignard, Photorefractive Materials and Their Applications (Springer, Berlin, 1988–1989), Vols. 1, 2.
2. P. Yeh, Introduction to Photorefractive Nonlinear Optics (Wiley, New York, 1993).
3. E. V. Rudenko and A. V. Sukhov, Pis’ma Zh. Éksp. Teor. Fiz. 59, 133 (1994) [JETP Lett. 59, 142 (1994)].
4. E. V. Rudenko and A. V. Sukhov, Zh. Éksp. Teor. Fiz. 105, 1621 (1994) [JETP 78, 875 (1994)].
5. I. C. Khoo, H. Li, and Y. Liang, Opt. Lett. 19, 1723 (1994).