@article{KVANT_2018_4_a2,
     author = {V. V. Ptushenko},
     title = {{\CYRP}{\cyru}{\cyrt}{\cyri} {\cyrs}{\cyrv}{\cyre}{\cyrt}{\cyra}},
     journal = {Kvant},
     pages = {46},
     publisher = {mathdoc},
     number = {4},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KVANT_2018_4_a2/}
}