@article{MP_2005_a22,
     author = {P. V. Sergeev and I. V. Yaschenko},
     title = {Problems.Ru {\cyri} {\cyrp}{\cyrr}{\cyro}{\cyrb}{\cyrl}{\cyre}{\cyrm}{\cyrery} {\cyrk}{\cyrl}{\cyra}{\cyrs}{\cyrs}{\cyri}{\cyrf}{\cyri}{\cyrk}{\cyra}{\cyrc}{\cyri}{\cyri}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {207--214},
     publisher = {mathdoc},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2005_a22/}
}