%0 Journal Article %A A. L. Rozental' %T Sufficient subspaces for a~space of functions defined on a~countable set %J Informatics and Automation %D 1965 %P 24-25 %V 79 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1965_79_a4/ %G ru %F TRSPY_1965_79_a4