@article{DAN_1972_205_4_a4,
     author = {A. F. Kudinov},
     title = {On mean values of arithmetic functions},
     journal = {Doklady Akademii Nauk},
     pages = {774--776},
     publisher = {mathdoc},
     volume = {205},
     number = {4},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_205_4_a4/}
}