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@article{MS_1949__66_1_a8, author = {{\CYRA}.{\CYRA}. {\CYRL}{\cyrya}{\cyrp}{\cyru}{\cyrn}{\cyro}{\cyrv}}, title = {{\CYRO} $* s$-{\cyro}{\cyrp}{\cyre}{\cyrr}{\cyra}{\cyrc}{\cyri}{\cyrya}{\cyrh}, {\cyrs}{\cyro}{\cyrh}{\cyrr}{\cyra}{\cyrn}{\cyrya}{\cyryu}{\cyrshch}{\cyri}{\cyrh} {\cyri}{\cyrz}{\cyrm}{\cyre}{\cyrr}{\cyri}{\cyrm}{\cyro}{\cyrs}{\cyrt}{\cyrsftsn} {\cyri} {\cyrs}{\cyrv}{\cyro}{\cyrishrt}{\cyrs}{\cyrt}{\cyrv}{\cyro} {{\CYRB}{\cyrerev}{\cyrr}{\cyra}}}, journal = {Matemati\v{c}eskij sbornik}, pages = {119--127}, publisher = {mathdoc}, volume = {66}, number = {1}, year = {1949}, zbl = {0036.16602}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1949__66_1_a8/} }
А.А. Ляпунов. О $* s$-операциях, сохраняющих измеримость и свойство Бэра. Matematičeskij sbornik, Tome 66 (1949) no. 1, pp. 119-127. http://geodesic.mathdoc.fr/item/MS_1949__66_1_a8/