@article{ZNSL_1994_212_a3,
     author = {V. A. Bykovskii},
     title = {Density theorems and the mean value of arithmetical functions in short intervals},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {56--70},
     publisher = {mathdoc},
     volume = {212},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1994_212_a3/}
}