@article{KVANT_2019_11_a0, author = {I. Esipov}, title = {{\CYRZ}{\cyrv}{\cyru}{\cyrk} {\cyrv} {\cyrk}{\cyro}{\cyrs}{\cyrm}{\cyro}{\cyrs}{\cyre}.}, journal = {Kvant}, pages = {2--8}, year = {2019}, number = {11}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2019_11_a0/} }