%0 Journal Article %A A. A. Esin %T On Function Classes in $P_3$ Precomplete with Respect to a Strengthened Closure Operator %J Matematičeskie zametki %D 2008 %P 650-660 %V 83 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2008_83_5_a1/ %G ru %F MZM_2008_83_5_a1