%0 Journal Article %A R. A. Airapetyan %T Extension of CR-functions from piecewise smooth CR-manifolds %J Sbornik. Mathematics %D 1989 %P 111-120 %V 62 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_1989_62_1_a6/ %G en %F SM_1989_62_1_a6