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@article{MS_1951__71_3_a4, author = {{\CYRM}.{\CYRA}. {\CYRL}{\cyru}{\cyrk}{\cyro}{\cyrm}{\cyrs}{\cyrk}{\cyra}{\cyrya}}, title = {{\CYRO} {\cyrc}{\cyri}{\cyrk}{\cyrl}{\cyra}{\cyrh} {\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm} {\cyrl}{\cyri}{\cyrn}{\cyre}{\cyrishrt}{\cyrn}{\cyrery}{\cyrh} {\cyro}{\cyrd}{\cyrn}{\cyro}{\cyrr}{\cyro}{\cyrd}{\cyrn}{\cyrery}{\cyrh} {\cyrd}{\cyri}{\cyrf}{\cyrf}{\cyre}{\cyrr}{\cyre}{\cyrn}{\cyrc}{\cyri}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrh} {\cyru}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrishrt}}, journal = {Matemati\v{c}eskij sbornik}, pages = {551--558}, publisher = {mathdoc}, volume = {71}, number = {3}, year = {1951}, zbl = {0044.09403}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1951__71_3_a4/} }
М.А. Лукомская. О циклах систем линейных однородных дифференциальных уравнений. Matematičeskij sbornik, Tome 71 (1951) no. 3, pp. 551-558. http://geodesic.mathdoc.fr/item/MS_1951__71_3_a4/