Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2021_4_a9, title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {{\CYRM}2646{\textendash}{\CYRM}2649,} {{\CYRF}2653{\textendash}{\CYRF}2656}}, journal = {Kvant}, pages = {17--19}, publisher = {mathdoc}, number = {4}, year = {2021}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2021_4_a9/} }
Задачи М2646–М2649, Ф2653–Ф2656. Kvant, no. 4 (2021), pp. 17-19. http://geodesic.mathdoc.fr/item/KVANT_2021_4_a9/