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@article{MS_1959__90_2_a7, author = {{\CYRI}.{\CYRG}. {\CYRP}{\cyre}{\cyrt}{\cyrr}{\cyro}{\cyrv}{\cyrs}{\cyrk}{\cyri}{\cyrishrt} and {\CYRE}.{\CYRM}. {\CYRL}{\cyra}{\cyrn}{\cyrd}{\cyri}{\cyrs}}, title = {{\CYRP}{\cyro}{\cyrp}{\cyrr}{\cyra}{\cyrv}{\cyrk}{\cyri} {\cyrk} {\cyrs}{\cyrt}{\cyra}{\cyrt}{\cyrsftsn}{\cyrya}{\cyrm}}, journal = {Matemati\v{c}eskij sbornik}, pages = {253--255}, publisher = {mathdoc}, volume = {90}, number = {2}, year = {1959}, zbl = {0101.30303}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1959__90_2_a7/} }
И.Г. Петровский; Е.М. Ландис. Поправки к статьям. Matematičeskij sbornik, Tome 90 (1959) no. 2, pp. 253-255. http://geodesic.mathdoc.fr/item/MS_1959__90_2_a7/