Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2011_3_a20, title = {{\CYRI}{\cyrz}{\cyrb}{\cyrr}{\cyra}{\cyrn}{\cyrn}{\cyrery}{\cyre} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {{\CYRS}{\cyra}{\cyrn}{\cyrk}{\cyrt}-{\CYRP}{\cyre}{\cyrt}{\cyre}{\cyrr}{\cyrb}{\cyru}{\cyrr}{\cyrg}{\cyrs}{\cyrk}{\cyro}{\cyrishrt}} {\cyrg}{\cyro}{\cyrr}{\cyro}{\cyrd}{\cyrs}{\cyrk}{\cyro}{\cyrishrt} {\cyro}{\cyrl}{\cyri}{\cyrm}{\cyrp}{\cyri}{\cyra}{\cyrd}{\cyrery} {\cyrp}{\cyro} {\cyrm}{\cyra}{\cyrt}{\cyre}{\cyrm}{\cyra}{\cyrt}{\cyri}{\cyrk}{\cyre}}, journal = {Kvant}, pages = {59--62}, publisher = {mathdoc}, number = {3}, year = {2011}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2011_3_a20/} }
Избранные задачи Санкт-Петербургской городской олимпиады по математике. Kvant, no. 3 (2011), pp. 59-62. http://geodesic.mathdoc.fr/item/KVANT_2011_3_a20/