@article{ZNSL_2014_429_a2,
     author = {V. O. Dron and V. V. Zhuk},
     title = {On approximation of periodic functions by modified {Steklov} averages in~$L_2$},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {20--33},
     publisher = {mathdoc},
     volume = {429},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2014_429_a2/}
}