%0 Journal Article %A B. Jöricke %A V. P. Havin %T Letter to the Editor %J Zapiski Nauchnykh Seminarov POMI %D 1984 %P 200 %V 135 %U http://geodesic.mathdoc.fr/item/ZNSL_1984_135_a17/ %G ru %F ZNSL_1984_135_a17