1. N. Akhmediev, A. Ankiewicz, Solitons, Nonlinear Pulses and Beams (Chapman & Hall, London, 1997)
2. N. Akhmediev, A. Ankiewicz (eds.), Dissipative Solitons (Springer, Berlin, 2005)
3. X. Haus, J. Appl. Phys. 46, 3049 (1975)
4. P.A. Belanger, J. Opt. Soc. Am. B 8, 2077 (1991)
5. O. Weiss, Phys. Rep. 219, 311 (1992)