1. Hall, G. & Watt, J. M. (eds.) 1976 Modern Numerical Methods for Ordinary Differential Equations .Oxford University Press.
2. Goldsmith, H. L. & Mason, S. G. 1963 J. Coll. Interface Sci. 18,237.
3. Happel, J. & Brenner, H. 1965 Low Reynolds Number Hydrodynamics .Prentice-Hall.
4. Mohanty, K. K. 1981 Fluids in porous media: two phase distribution and flow. PhD dissertation, University of Minnesota.
5. Hickox, C. E. 1971 Phys. Fluids 14,251.