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@article{DAN_1961_140_2_a8, author = {A. F. Timan}, title = {A geometric problem in the theory of approximations}, journal = {Doklady Akademii Nauk}, pages = {307--310}, publisher = {mathdoc}, volume = {140}, number = {2}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_2_a8/} }
A. F. Timan. A geometric problem in the theory of approximations. Doklady Akademii Nauk, Tome 140 (1961) no. 2, pp. 307-310. http://geodesic.mathdoc.fr/item/DAN_1961_140_2_a8/