Szukana fraza: [Abstract = "It found that for a potentially stable arrangement the Rivlin\-Ericksen elastico\-viscous fluid of different permeabilities in the presence of suspended particles in a porous medium is stable, whereas in a potentially unstable case instability of the system occurs. In the presence of a magnetic field for a potentially stable arrangement the system is always stable and for the potentially unstable arrangement, the magnetic field succeeds in stabilizing certain wave\-number band which was unstable in the absence of the magnetic field."]