Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2019_3_a10, title = {{\CYRZ}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} 25--28}, journal = {Kvant}, pages = {28}, publisher = {mathdoc}, number = {3}, year = {2019}, language = {ru}, url = {https://geodesic-test.mathdoc.fr/item/KVANT_2019_3_a10/} }
Задачи 25--28. Kvant, no. 3 (2019). https://geodesic-test.mathdoc.fr/item/KVANT_2019_3_a10/