1. Abbott, M.B. 1966 “An introduction to the method of characteristics”, American Elsevier Publishing Co., New York.
2. Amorocho, J. 1973 Advances in Hydroscience, vol. 9, edited by V. T. Chow, Academic Press, New York. Nonlinear hydrologic analysis.
3. Cunge, J.A., Holly, F.M. and Verwey, A. 1980 “Practical Aspects of Computational River Hydraulics”, Pitman Advanced Publishing Program, Boston.
4. Dooge, J.C.I, and Harley, B.M. 1967 Proc. Int. Hydrol. Symp., Fort Collins, Colo., Pap. No. 8, 1:57–63. Linear routing in uniform open channels.
5. Dooge, J.C.I. 1969 IAHS Publication 76, 409, A new approach to nonlinear problems in surface water hydrology.