@article{ZNSL_1985_142_a14,
     author = {L. V. Rozovskii},
     title = {Accuracy of the approximation of the characteristic functions by polynomials},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {141--144},
     publisher = {mathdoc},
     volume = {142},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1985_142_a14/}
}