%0 Journal Article %A V. Potyemkin %A V. Ryazanov %T On the noncompactness of David classes %J Annales Fennici Mathematici %D 1998 %P 191-204 %V 23 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_1998_23_1_a10/ %G en %F AFM_1998_23_1_a10