@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/}
}