Inverse solutions for a second-grade fluid for porous medium channel and   Hall current effects
  Assuming certain forms of the stream function inverse solutions of an incompressible viscoelastic fluid for a porous medium channel in the presence of Hall currents are obtained. Expressions for streamlines, velocity components and pressure fields are described in each case and are compared with the known viscous and second-grade cases. 
Muhammad R Mohyuddin and Ehsan Ellahi Ashraf