%0 Journal Article %A G. D. Suvorov %T First Donets Colloquium on Quasi-Conformal Mapping Theory and Its Generalizations %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1969 %V 24 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1969_24_3_a18/ %G ru %F RM_1969_24_3_a18