1. Lighthill, M. J., Whitham, G. B.: On kinematic waves. I. Flood movement in long rivers. Proc. Roy. Soc. Lond. A299, 281?316 (1955).
2. Cole, J. D.: Perturbation methods in applied mathematics. Blaisdell 1968.
3. Germain, P.: Shock waves, jump relations and structure. Adv. Appl. Mech.12, 131?184 (1972).
4. Whitham, G. B.: Linear and nonlinear waves. New York: Wiley 1974.
5. Kynch, G. J.: A theory of sedimentation. Trans. Faraday Soc.48, 166?176 (1952).