Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{MP_2007_a20, title = {{\CYRU}{\cyrs}{\cyrl}{\cyro}{\cyrv}{\cyri}{\cyrya} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}}, journal = {Matematicheskoe Prosveshchenie}, pages = {162--164}, publisher = {mathdoc}, year = {2007}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MP_2007_a20/} }
Условия задач. Matematicheskoe Prosveshchenie, Matematicheskoe Prosveshchenie (2007), pp. 162-164. http://geodesic.mathdoc.fr/item/MP_2007_a20/