%0 Journal Article %A Futák, Ján %T On boundedness and stability of solutions of nonlinear second order differential equations in Hilbert spaces %J Archivum mathematicum %D 1987 %P 147-154 %V 23 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1987__23_3_a1/ %G en %F ARM_1987__23_3_a1