%0 Journal Article %A G. D. Suvorov %A È. R. Tsekanovskii %T Third Donets Colloquium on Quasi-Conformal Mapping Theory and Its Generalizations %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1973 %V 28 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1973_28_1_a22/ %G ru %F RM_1973_28_1_a22