%0 Journal Article %A S. E. Zhukovskiy %A K. V. Storozhuk %T On Smooth Functions That Are Even on the Boundary of a Ball %J Informatics and Automation %D 2023 %P 156-161 %V 321 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_2023_321_a9/ %G ru %F TRSPY_2023_321_a9