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@article{MS_1948__65_2_a5, author = {{\CYRB}.{\CYRA}. {\CYRR}{\cyro}{\cyrz}{\cyre}{\cyrn}{\cyrf}{\cyre}{\cyrl}{\cyrsftsn}{\cyrd}}, title = {{\CYRK}{\cyro}{\cyrn}{\cyrf}{\cyro}{\cyrr}{\cyrm}{\cyrn}{\cyro}-{\cyrd}{\cyri}{\cyrf}{\cyrf}{\cyre}{\cyrr}{\cyre}{\cyrn}{\cyrc}{\cyri}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyra}{\cyrya} {\cyrg}{\cyre}{\cyro}{\cyrm}{\cyre}{\cyrt}{\cyrr}{\cyri}{\cyrya} {\cyrs}{\cyre}{\cyrm}{\cyre}{\cyrishrt}{\cyrs}{\cyrt}{\cyrv} $C_m$ {\cyrv} $C_n$}, journal = {Matemati\v{c}eskij sbornik}, pages = {297--314}, publisher = {mathdoc}, volume = {65}, number = {2}, year = {1948}, zbl = {0045.42704}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1948__65_2_a5/} }
Б.А. Розенфельд. Конформно-дифференциальная геометрия семейств $C_m$ в $C_n$. Matematičeskij sbornik, Tome 65 (1948) no. 2, pp. 297-314. http://geodesic.mathdoc.fr/item/MS_1948__65_2_a5/