%0 Journal Article %A V. V. Kisil %T Local behavior of two-sided convolution operators with singular kernels on the Heisenberg group %J Matematičeskie zametki %D 1994 %P 41-55 %V 56 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1994_56_2_a2/ %G ru %F MZM_1994_56_2_a2