2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/84271This paper has been withdrawn by the author due to the physically inconsistent assumption of constant slip velocity, instead, see a new improved model - physics/0201045.Revtex4, 7 postscript figs, submitted to J. Acoust. Soc. AmGeophysicsFluid DynamicsMedical PhysicsBiot's theory of propagation of elastic waves in a fluid-saturated porous solid revisited: introduction of non-zero boundary slip velocitytext