@article{MP_2001_a15,
     author = {E. A. Gorskii and V. M. Gurovits and I. V. Mezhirov and E. N. Os'mova},
     title = {{\CYRI}{\cyrg}{\cyrr}{\cyra} {{\CYRR}{\cyri}{\cyrch}{\cyrm}{\cyra}{\cyrn}{\cyra}}},
     journal = {Matematicheskoe Prosveshchenie},
     pages = {178--191},
     publisher = {mathdoc},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MP_2001_a15/}
}