%0 Journal Article %A V. V. Volchkov %A Vit. V. Volchkov %T Interpolation problems for functions with zero integrals over balls of fixed radius %J Doklady Rossijskoj akademii nauk. Matematika, informatika, processy upravleniâ %D 2020 %P 20-23 %V 490 %I mathdoc %U http://geodesic.mathdoc.fr/item/DANMA_2020_490_a4/ %G ru %F DANMA_2020_490_a4