Szukana fraza: [Abstract = "Rayleigh\-Taylor instability of two superposed Walters\? B has elastico\-viscous fluids in a uniform magnetic field through a porous medium with different permeability been studied to include the suspended \(dust\) particles effect. Using normal mode technique a dispersion relation has been derived. The stability analysis has been carried out. The magnetic field stabilizes the unstable configuration for the wave number band K>K\* in which the system is unstable in the absence of the magnetic field. It is also found that for a potential stable arrangement for Walters B\? elastico\-viscous fluids of different permeabilities in the presence of suspended particles through a porous medium the system is stable, whereas in the potentially unstable case instability of the system occurs."]