@article{ISU_2013_13_1_a13,
     author = {I. A. Kozlova},
     title = {Approximation of  {Boltsano} {Function}  by {Means} of  {Bernstein} {Polynomials}},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {56--59},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2013_13_1_a13/}
}