Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2007_4_a13, title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {{\CYRM}2051{\textendash}{\CYRM}2055,} {{\CYRF}2058{\textendash}{\CYRF}2062}}, journal = {Kvant}, pages = {17--18}, publisher = {mathdoc}, number = {4}, year = {2007}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2007_4_a13/} }
Задачи М2051–М2055, Ф2058–Ф2062. Kvant, no. 4 (2007), pp. 17-18. http://geodesic.mathdoc.fr/item/KVANT_2007_4_a13/