@article{10_4064_aa_53_1_5_12,
     author = {{\CYRISHRT}. {\CYRK}{\cyru}{\cyrb}{\cyri}{\cyrl}{\cyryu}{\cyrs} and {\CYREREV}. {\CYRK}{\cyro}{\cyrv}{\cyra}{\cyrl}{\cyre}{\cyrv}{\cyrs}{\cyrk}{\cyra}{\cyrya} and {\CYRA}. {\CYRK}{\cyra}{\cyrr}{\cyra}{\cyrc}{\cyru}{\cyrb}{\cyra}},
     title = {{\CYRB}{\cyri}{\cyro}{\cyrg}{\cyrr}{\cyra}{\cyrf}{\cyri}{\cyrya} {\cyri} {\cyrn}{\cyra}{\cyru}{\cyrch}{\cyrn}{\cyro}{\cyre} {\cyrt}{\cyrv}{\cyro}{\cyrr}{\cyrch}{\cyre}{\cyrs}{\cyrt}{\cyrv}{\cyro} {{\CYRB}.} {{\CYRG}.} {{\CYRS}{\cyrp}{\cyrr}{\cyri}{\cyrn}{\cyrd}{\cyrzh}{\cyru}{\cyrk}{\cyra}}},
     journal = {Acta Arithmetica},
     pages = {5--12},
     publisher = {mathdoc},
     volume = {53},
     number = {1},
     year = {1989},
     doi = {10.4064/aa-53-1-5-12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-53-1-5-12/}
}