TY - JOUR AU - G. D. Suvorov AU - V. P. Luferenko TI - Fourth Donets Colloquium on Quasi-Conformal Mapping Theory and Its Generalizations JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1975 VL - 30 IS - 3 UR - http://geodesic.mathdoc.fr/item/RM_1975_30_3_a27/ LA - ru ID - RM_1975_30_3_a27 ER -