Voir la notice de l'article provenant de la source Math-Net.Ru
@article{KVANT_2009_3_a1, author = {V. Protasov}, title = {{\CYRT}{\cyre}{\cyro}{\cyrr}{\cyre}{\cyrm}{\cyra} {{\CYRH}{\cyre}{\cyrl}{\cyrl}{\cyri}} {\cyri} {\cyrv}{\cyro}{\cyrk}{\cyrr}{\cyru}{\cyrg} {\cyrn}{\cyre}{\cyre}}, journal = {Kvant}, pages = {8--14}, publisher = {mathdoc}, number = {3}, year = {2009}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KVANT_2009_3_a1/} }
V. Protasov. Теорема Хелли и вокруг нее. Kvant, no. 3 (2009), pp. 8-14. http://geodesic.mathdoc.fr/item/KVANT_2009_3_a1/