%0 Journal Article %A Taneli Huuskonen %A Jussi Väısälä %T Hyers–Ulam constants of Hilbert spaces %J Studia Mathematica %D 2002 %P 31-40 %V 153 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm153-1-3/ %R 10.4064/sm153-1-3 %G en %F 10_4064_sm153_1_3