1. Agrawal, G. P. (2012). Nonlinear fiber optics. New York: Academic.
2. Bloembergen, N. (1982). Nonlinear optics. New York: Benjamin.
3. Boyd, R. W. (2008). Nonlinear optics. New York: Academic.
4. Butcher, P. N., & Cotter, D. (1991). The elements of nonlinear optics. New York: Cambridge University Press.
5. Cerullo, G., & De Silvestri, S. (2003). Ultrafast optical parametric amplifiers. Review of Scientific Instruments, 74(1), 1–18.