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@article{DAN_1965_163_6_a7, author = {O. V. Stepanova}, title = {A property of level lines in univalent conformal mappings}, journal = {Doklady Akademii Nauk}, pages = {1330}, publisher = {mathdoc}, volume = {163}, number = {6}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1965_163_6_a7/} }
O. V. Stepanova. A property of level lines in univalent conformal mappings. Doklady Akademii Nauk, Tome 163 (1965) no. 6. http://geodesic.mathdoc.fr/item/DAN_1965_163_6_a7/