Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2009_4_a25, title = {{\CYRI}{\cyrz}{\cyrb}{\cyrr}{\cyra}{\cyrn}{\cyrn}{\cyrery}{\cyre} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {LXXII} {{\CYRM}{\cyro}{\cyrs}{\cyrk}{\cyro}{\cyrv}{\cyrs}{\cyrk}{\cyro}{\cyrishrt}} {\cyrm}{\cyra}{\cyrt}{\cyre}{\cyrm}{\cyra}{\cyrt}{\cyri}{\cyrch}{\cyre}{\cyrs}{\cyrk}{\cyro}{\cyrishrt} {\cyro}{\cyrl}{\cyri}{\cyrm}{\cyrp}{\cyri}{\cyra}{\cyrd}{\cyrery}}, journal = {Kvant}, pages = {61--63}, publisher = {mathdoc}, number = {4}, year = {2009}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2009_4_a25/} }
Избранные задачи LXXII Московской математической олимпиады. Kvant, no. 4 (2009), pp. 61-63. http://geodesic.mathdoc.fr/item/KVANT_2009_4_a25/