Voir la notice de l'article provenant de la source Math-Net.Ru
@article{KVANT_2018_7_a11, author = {E. Epifanov}, title = {LXXXI {{\CYRM}{\cyro}{\cyrs}{\cyrk}{\cyro}{\cyrv}{\cyrs}{\cyrk}{\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 = {47--49}, publisher = {mathdoc}, number = {7}, year = {2018}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2018_7_a11/} }
E. Epifanov. LXXXI Московская математическая олимпиада. Kvant, no. 7 (2018), pp. 47-49. http://geodesic.mathdoc.fr/item/KVANT_2018_7_a11/