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@article{MS_1969__122_4_a4, author = {{\CYRV}.{\CYRV}. {\CYRF}{\cyri}{\cyrl}{\cyri}{\cyrp}{\cyrp}{\cyro}{\cyrv}}, title = {{\CYRF}{\cyra}{\cyrk}{\cyrt}{\cyro}{\cyrr}{\cyrp}{\cyrr}{\cyro}{\cyrs}{\cyrt}{\cyrr}{\cyra}{\cyrn}{\cyrs}{\cyrt}{\cyrv}{\cyra} {\cyri} {\cyrk}{\cyrr}{\cyra}{\cyrt}{\cyrn}{\cyro}{\cyrs}{\cyrt}{\cyrsftsn} {\cyrb}{\cyra}{\cyrz}{\cyrery}}, journal = {Matemati\v{c}eskij sbornik}, pages = {521--532}, publisher = {mathdoc}, volume = {122}, number = {4}, year = {1969}, zbl = {0199.57303}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1969__122_4_a4/} }
В.В. Филиппов. Факторпространства и кратность базы. Matematičeskij sbornik, Tome 122 (1969) no. 4, pp. 521-532. http://geodesic.mathdoc.fr/item/MS_1969__122_4_a4/