@article{ZNSL_1981_106_a9,
     author = {B. M. Shirokow},
     title = {The summation of multiplicative functions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {158--169},
     publisher = {mathdoc},
     volume = {106},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_106_a9/}
}