@article{ZNSL_2007_346_a7,
     author = {L. Yu. Kolotilina},
     title = {Improving {Chistyakov's} bounds for},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {103--118},
     year = {2007},
     volume = {346},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2007_346_a7/}
}