Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2017_5_a6, title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri}}, journal = {Kvant}, pages = {21}, publisher = {mathdoc}, number = {5}, year = {2017}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2017_5_a6/} }
Задачи. Kvant, no. 5 (2017). http://geodesic.mathdoc.fr/item/KVANT_2017_5_a6/