1. Dmitriev, V.G. and Tarasov, L.V., Prikladnaya nelineinaya optika (Applied Nonlinear Optics), Moscow: Fizmatlit, 2004.
2. Blistanov, A.A., Kristally kvantovoi i nelineinoi optiki (Crystals of Quantum and Nonlinear Optics), Moscow: Missis, 2000.
3. Samanta, G.K., Kumar, S.C., Mathew, M., et al., Opt. Lett., 2008, vol. 33, no. 24, p. 2955.
4. Zinkstok, R.Th., Witte, S., Hogervorst, W., et al., Opt. Lett., 2005, vol. 30, no. 1, p. 78.
5. Pasiskevicius, H.K., Karlsson, H., Tellefsen, J.A., et al., Opt. Lett., 2000, vol. 25, no. 13, p. 969.