Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2021_6_a8, title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {{\CYRM}2654{\textendash}{\CYRM}2657,} {{\CYRF}2661{\textendash}{\CYRF}2664}}, journal = {Kvant}, pages = {10--11}, publisher = {mathdoc}, number = {6}, year = {2021}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2021_6_a8/} }
Задачи М2654–М2657, Ф2661–Ф2664. Kvant, no. 6 (2021), pp. 10-11. http://geodesic.mathdoc.fr/item/KVANT_2021_6_a8/