Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2008_3_a19, title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri}}, journal = {Kvant}, pages = {59}, publisher = {mathdoc}, number = {3}, year = {2008}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2008_3_a19/} }
Задачи. Kvant, no. 3 (2008). http://geodesic.mathdoc.fr/item/KVANT_2008_3_a19/