@article{KVANT_2009_4_a6,
     author = {N. Rostovtsev and A. Sedov},
     title = {{\CYRO}{\cyrp}{\cyrery}{\cyrt}{\cyrery} {\cyrs} {\cyrk}{\cyro}{\cyrm}{\cyrp}{\cyra}{\cyrk}{\cyrt}-{\cyrd}{\cyri}{\cyrs}{\cyrk}{\cyro}{\cyrm}},
     journal = {Kvant},
     pages = {44--45},
     publisher = {mathdoc},
     number = {4},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2009_4_a6/}
}