@article{IVM_2014_8_a4,
     author = {Sh. T. Ishmukhametov and F. F. Sharifullina},
     title = {On a~distrubution of semiprime numbers},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {53--59},
     publisher = {mathdoc},
     number = {8},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2014_8_a4/}
}