Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2011_3_a7, title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {{\CYRM}2221{\textendash}{\CYRM}2228,} {{\CYRF}2228{\textendash}{\CYRF}2234}}, journal = {Kvant}, pages = {23--24}, publisher = {mathdoc}, number = {3}, year = {2011}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2011_3_a7/} }
Задачи М2221–М2228, Ф2228–Ф2234. Kvant, no. 3 (2011), pp. 23-24. http://geodesic.mathdoc.fr/item/KVANT_2011_3_a7/