Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2020_10_a13, title = {LXI {{\CYRM}{\cyre}{\cyrzh}{\cyrd}{\cyru}{\cyrn}{\cyra}{\cyrr}{\cyro}{\cyrd}{\cyrn}{\cyra}{\cyrya}} {\cyrm}{\cyra}{\cyrt}{\cyre}{\cyrm}{\cyra}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyra}{\cyrya} {\cyro}{\cyrl}{\cyri}{\cyrm}{\cyrp}{\cyri}{\cyra}{\cyrd}{\cyra}}, journal = {Kvant}, pages = {54--56}, publisher = {mathdoc}, number = {10}, year = {2020}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2020_10_a13/} }
LXI Международная математическая олимпиада. Kvant, no. 10 (2020), pp. 54-56. http://geodesic.mathdoc.fr/item/KVANT_2020_10_a13/