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@article{MI_1969__4_3_188986, author = {{\CYRV}.{\CYRI}. {\CYRG}{\cyru}{\cyrr}{\cyra}{\cyrr}{\cyri}{\cyrishrt} and {\CYRN}.{\CYRI}. {\CYRG}{\cyru}{\cyrr}{\cyra}{\cyrr}{\cyri}{\cyrishrt}}, title = {{\CYRO}{\cyrb} {\cyro}{\cyrd}{\cyrn}{\cyro}{\cyrm} {\cyrs}{\cyre}{\cyrk}{\cyrv}{\cyre}{\cyrn}{\cyrc}{\cyri}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyro}{\cyrm} {\cyrs}{\cyrv}{\cyro}{\cyrishrt}{\cyrs}{\cyrt}{\cyrv}{\cyre} {\cyrp}{\cyrr}{\cyro}{\cyrs}{\cyrt}{\cyrr}{\cyra}{\cyrn}{\cyrs}{\cyrt}{\cyrv}{\cyra} $\ensuremath{\ell}_1$}, journal = {Matemati\v{c}eskie issledovani\^a}, pages = {140--145}, publisher = {mathdoc}, volume = {4}, number = {3}, year = {1969}, zbl = {0234.46014}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MI_1969__4_3_188986/} }
В.И. Гурарий; Н.И. Гурарий. Об одном секвенциальном свойстве пространства $ℓ_1$. Matematičeskie issledovaniâ, Tome 4 (1969) no. 3, pp. 140-145. http://geodesic.mathdoc.fr/item/MI_1969__4_3_188986/