Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1961_140_6_a38, author = {K. K. Billevich and T. K. Shulikina}, title = {{\CYRP}{\cyri}{\cyrs}{\cyrsftsn}{\cyrm}{\cyro} {\cyrv}~{\cyrr}{\cyre}{\cyrd}{\cyra}{\cyrk}{\cyrc}{\cyri}{\cyryu}}, journal = {Doklady Akademii Nauk}, pages = {1235--1236}, publisher = {mathdoc}, volume = {140}, number = {6}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_6_a38/} }
K. K. Billevich; T. K. Shulikina. Письмо в~редакцию. Doklady Akademii Nauk, Tome 140 (1961) no. 6, pp. 1235-1236. http://geodesic.mathdoc.fr/item/DAN_1961_140_6_a38/