%0 Journal Article %A Wojciech Banaszczyk %T On the existence of commutative Banach-Lie groups which do not admit continuous unitary representations %J Colloquium Mathematicum %D 1987 %P 113-118 %V 52 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-52-1-113-118/ %R 10.4064/cm-52-1-113-118 %G en %F 10_4064_cm_52_1_113_118