@article{ISU_2014_14_4_a14,
     author = {A. A. Khromov},
     title = {Approximation of {Function} and {Its} {Derivative} by the {Modificated} {Steklov} {Operator}},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {595--599},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2014_14_4_a14/}
}