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@article{DAN_1968_179_5_a13, author = {V. G. Sheretov}, title = {Extremal quasiconformal mappings with a restriction on the dilatation}, journal = {Doklady Akademii Nauk}, pages = {1060--1063}, publisher = {mathdoc}, volume = {179}, number = {5}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1968_179_5_a13/} }
V. G. Sheretov. Extremal quasiconformal mappings with a restriction on the dilatation. Doklady Akademii Nauk, Tome 179 (1968) no. 5, pp. 1060-1063. http://geodesic.mathdoc.fr/item/DAN_1968_179_5_a13/