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@article{DAN_1972_204_5_a1, author = {I. A. Volynets}, title = {Distortion of area under quasiconformal mappings}, journal = {Doklady Akademii Nauk}, pages = {1034--1036}, publisher = {mathdoc}, volume = {204}, number = {5}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1972_204_5_a1/} }
I. A. Volynets. Distortion of area under quasiconformal mappings. Doklady Akademii Nauk, Tome 204 (1972) no. 5, pp. 1034-1036. http://geodesic.mathdoc.fr/item/DAN_1972_204_5_a1/