Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2018_4_a15, title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} 29--32}, journal = {Kvant}, pages = {23}, publisher = {mathdoc}, number = {4}, year = {2018}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2018_4_a15/} }
Задачи 29--32. Kvant, no. 4 (2018). http://geodesic.mathdoc.fr/item/KVANT_2018_4_a15/