Voir la notice de l'article provenant de la source Math-Net.Ru
@misc{KVANT_2005_1_a15, title = {{\CYRP}{\cyro}{\cyrch}{\cyre}{\cyrm}{\cyru} {\cyrn}{\cyre}{\cyrt} {\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyrishrt}?}, journal = {Kvant}, pages = {50}, publisher = {mathdoc}, number = {1}, year = {2005}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2005_1_a15/} }
Почему нет решений?. Kvant, no. 1 (2005). http://geodesic.mathdoc.fr/item/KVANT_2005_1_a15/