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@article{DAN_1961_140_6_a8, author = {G. D. Suvorov}, title = {The length and area principle for $Q$-quasiconformal mappings}, journal = {Doklady Akademii Nauk}, pages = {1267--1269}, publisher = {mathdoc}, volume = {140}, number = {6}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_6_a8/} }
G. D. Suvorov. The length and area principle for $Q$-quasiconformal mappings. Doklady Akademii Nauk, Tome 140 (1961) no. 6, pp. 1267-1269. http://geodesic.mathdoc.fr/item/DAN_1961_140_6_a8/