Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2021_11_a10, title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} 9--16}, journal = {Kvant}, pages = {19--20}, publisher = {mathdoc}, number = {11}, year = {2021}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2021_11_a10/} }
Задачи 9--16. Kvant, no. 11 (2021), pp. 19-20. http://geodesic.mathdoc.fr/item/KVANT_2021_11_a10/