@article{IM2_1992_38_1_a6,
     author = {A. P. Petukhov},
     title = {On the dependence of properties of the graph of a function  on the degree of various approximations},
     journal = {Izvestiya. Mathematics },
     pages = {155--177},
     publisher = {mathdoc},
     volume = {38},
     number = {1},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1992_38_1_a6/}
}