@article{VMUMM_2011_3_a11,
     author = {D. V. Goryashin},
     title = {Ingham divisor problem with square-free numbers},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {52--55},
     publisher = {mathdoc},
     number = {3},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2011_3_a11/}
}