%0 Journal Article %A Frota, C.L. %A Lar'kin, N.A. %T On a variational inequality for the nonhomogeneous degenerated Kirchhoff equation with a frictional damping. %J Portugaliae mathematica %D 1998 %P 277-291 %V 55 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1998__55_3_48152/ %G en %F PORMA_1998__55_3_48152