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@article{MS_1950__68_1_a6, author = {{\CYRI}.{\CYRM}. {\CYRG}{\cyre}{\cyrl}{\cyrsftsn}{\cyrf}{\cyra}{\cyrn}{\cyrd}}, title = {{\CYRC}{\cyre}{\cyrn}{\cyrt}{\cyrr} {\cyri}{\cyrn}{\cyrf}{\cyri}{\cyrn}{\cyri}{\cyrt}{\cyre}{\cyrz}{\cyri}{\cyrm}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyrg}{\cyrr}{\cyru}{\cyrp}{\cyrp}{\cyro}{\cyrv}{\cyro}{\cyrg}{\cyro} {\cyrk}{\cyro}{\cyrl}{\cyrsftsn}{\cyrc}{\cyra}}, journal = {Matemati\v{c}eskij sbornik}, pages = {103--112}, publisher = {mathdoc}, volume = {68}, number = {1}, year = {1950}, zbl = {0035.30001}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1950__68_1_a6/} }
И.М. Гельфанд. Центр инфинитезимального группового кольца. Matematičeskij sbornik, Tome 68 (1950) no. 1, pp. 103-112. http://geodesic.mathdoc.fr/item/MS_1950__68_1_a6/