2. A.S. Furman, Spontaneous increasing of recharging waves in crystals without inversion center under stationary illumination // Sol. St. Phys., 29(4), pp.1076-1085 (1987).
3. B.I. Sturman, E. Sharmonina, M. Mann, K.H. Ringhofer, Space-charge waves in photorefractive ferroelectrics // J.Opt. Soc. Am., 12(9), pp. 1642-1650 (1995). https://doi.org/10.1364/JOSAB.12.001642
5. D. Engin, S. Orlov, M. Segev, G.C. Valley, A. Yariv, Order-disorder phase transition and critical slowing down in photorefractive self-oscillators // Phys.Rev. Lett., 74(10),pp.1743-1746 (1995). https://doi.org/10.1103/PhysRevLett.74.1743
6. O. Sandfuchs, J. Leonardy, F. Kaiser and M. Belic, Transverse instabilities in photorefractive counter propagating twowave mixing // Phys. Rev., A53(6), pp.4519-4524 (1996.)
7. B.I. Sturman, E. Sharmonina, M. Mann, K.H. Ringhofer, Space-charge waves in photorefractive ferroelectrics // J.Opt. Soc. Am., 12(9), pp. 1672-1650 (1995). https://doi.org/10.1364/JOSAB.12.001642
8. N.N. Rozanov, Hysteresis phenomena in distributed optical systems // JETP., 80(1), pp.96-108 (1981).
9. A.N.Morozovska, V.V. Obukhovskii, Autowave-type instability in photorefractive crystals // Proceedings of SPIE, 3904,pp. 209-214 (1999). https://doi.org/10.1117/12.370404