%0 Journal Article %A A. S. Fokht %T Estimate of the derivative of a harmonic function and weighted imbedding theorems connected with it %J Differencialʹnye uravneniâ %D 1984 %P 659-666 %V 20 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1984_20_4_a12/ %G ru %F DE_1984_20_4_a12