%0 Journal Article %A V. M. Gol'dstein %T The degree of summability of generalized derivatives of plane quasiconformal homeomorphisms %J Doklady Akademii Nauk %D 1980 %P 18-21 %V 250 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_250_1_a2/ %G ru %F DAN_1980_250_1_a2