@article{MP_2000_a12,
     author = {M. Ya. Kelbert},
     title = {{\CYRCH}{\cyrt}{\cyro} {\cyrt}{\cyra}{\cyrk}{\cyro}{\cyre} {\cyrp}{\cyrr}{\cyre}{\cyro}{\cyrb}{\cyrr}{\cyra}{\cyrz}{\cyro}{\cyrv}{\cyra}{\cyrn}{\cyri}{\cyre} {{\CYRF}{\cyru}{\cyrr}{\cyrsftsn}{\cyre}?}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {188--202},
     publisher = {mathdoc},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2000_a12/}
}