%0 Journal Article %A Barbu, Viorel %A Prato, Giuseppe Da %T Some results for the reflection problems in Hilbert spaces %J Control and Cybernetics %D 2008 %P 797-810 %V 37 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CC_2008_37_4_a4/ %G en %F CC_2008_37_4_a4