Voir la notice de l'article provenant de la source Math-Net.Ru
@article{KVANT_2012_5_a36, author = {E. Epifanov}, title = {{\CYRK}{\cyrv}{\cyra}{\cyrd}{\cyrr}{\cyra}{\cyrt} {\cyrv} {\cyrk}{\cyro}{\cyrn}{\cyrv}{\cyre}{\cyrr}{\cyrt}{\cyre}}, journal = {Kvant}, pages = {1}, publisher = {mathdoc}, number = {5}, year = {2012}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2012_5_a36/} }
E. Epifanov. Квадрат в конверте. Kvant, no. 5 (2012). http://geodesic.mathdoc.fr/item/KVANT_2012_5_a36/