%0 Journal Article %A N. M. Tkachenko %A F. A. Shamoyan %T The Hardy–Littlewood theorem and the operator of harmonic conjugate in some classes of simply connected domains with rectifiable boundary %J Žurnal matematičeskoj fiziki, analiza, geometrii %D 2009 %P 192-210 %V 5 %N 2 %U http://geodesic.mathdoc.fr/item/JMAG_2009_5_2_a4/ %G en %F JMAG_2009_5_2_a4