Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2021_5_a20, title = {{\CYRO}{\cyrl}{\cyri}{\cyrm}{\cyrp}{\cyri}{\cyra}{\cyrd}{\cyra} {{\guillemotleft}{\CYRL}{\cyro}{\cyrm}{\cyro}{\cyrn}{\cyro}{\cyrs}{\cyro}{\cyrv}{\guillemotright}}}, journal = {Kvant}, pages = {60--64}, publisher = {mathdoc}, number = {5}, year = {2021}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2021_5_a20/} }
Олимпиада «Ломоносов». Kvant, no. 5 (2021), pp. 60-64. http://geodesic.mathdoc.fr/item/KVANT_2021_5_a20/