%0 Journal Article %A A. S. Fokht %A V. A. Krasnov %T Integral estimates of the fractional derivatives of a harmonic function, and some of their applications %J Differencialʹnye uravneniâ %D 1973 %P 2276-2279 %V 9 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1973_9_12_a27/ %G ru %F DE_1973_9_12_a27