Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2022_11_a15, title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri}}, journal = {Kvant}, pages = {59--60}, publisher = {mathdoc}, number = {11}, year = {2022}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2022_11_a15/} }
Задачи. Kvant, no. 11 (2022), pp. 59-60. http://geodesic.mathdoc.fr/item/KVANT_2022_11_a15/