1. Linear and Nonlinear Waves;Whitham,1974
2. On cnoidal waves and bores;Benjamin;Proc. R. Soc. Lond. Ser. A,1954
3. Cooperative phenomena and shock waves in collisionless plasmas;Sagdeev;Rev. Plasma Phys.,1966
4. Envelope shock waves;Ostrovskii;Sov. Phys.—JETP,1968
5. Turbulence in integrable systems;Zakharov;Stud. Appl. Math.,2009