%0 Journal Article %A A. A. Arutyunov %A A. S. Mishchenko %T A~smooth version of Johnson's problem on derivations of group algebras %J Sbornik. Mathematics %D 2019 %P 756-782 %V 210 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2019_210_6_a0/ %G en %F SM_2019_210_6_a0