Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2018_4_a21, title = {{\CYRG}{\cyrd}{\cyre} {\cyro}{\cyrsh}{\cyri}{\cyrb}{\cyrk}{\cyra}?}, journal = {Kvant}, pages = {54--57}, publisher = {mathdoc}, number = {4}, year = {2018}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2018_4_a21/} }
Где ошибка?. Kvant, no. 4 (2018), pp. 54-57. http://geodesic.mathdoc.fr/item/KVANT_2018_4_a21/