Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1961_139_3_a40, author = {G. \`Eskin and R. Ismagilov and M. S. Livshits}, title = {{\CYRP}{\cyri}{\cyrs}{\cyrsftsn}{\cyrm}{\cyro} {\cyrv}~{\cyrr}{\cyre}{\cyrd}{\cyra}{\cyrk}{\cyrc}{\cyri}{\cyryu}}, journal = {Doklady Akademii Nauk}, pages = {520}, publisher = {mathdoc}, volume = {139}, number = {3}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_139_3_a40/} }
G. Èskin; R. Ismagilov; M. S. Livshits. Письмо в~редакцию. Doklady Akademii Nauk, Tome 139 (1961) no. 3. http://geodesic.mathdoc.fr/item/DAN_1961_139_3_a40/