@article{KVANT_2011_4_a28,
     author = {E. Gik},
     title = {{\CYRP}{\cyro}{\cyrd}{\cyrd}{\cyra}{\cyrv}{\cyrk}{\cyri}},
     journal = {Kvant},
     pages = {70},
     year = {2011},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2011_4_a28/}
}