1. P. Smith, A linear analysis of steady surfaces waves on a viscous liquid flowing down an inclined plane.J. Engin. Math., 1 (1967) 273?284.
2. J. V. Wehausen, Free surface flows, In:Research Frontiers in Fluid Dynamics, edited by R. J. Seeger and G. Temple, pp. 534?640, Interscience, New York, 1965.
3. T. B. Benjamin, Wave formation in laminar flow down an inclined plane.J. Fluid Meck., 2 (1957) 554?574.
4. I. N. Sneddon,Fourier Transforms. McGraw-Hill, New York, 1951.
5. A. Erdélyi,Tables of Integral Transforms, Vol. 1. McGraw-Hill, New York, 1954.