%0 Journal Article %A I. I. Sharapudinov %T Limit Ultraspherical Series and Their Approximation Properties %J Matematičeskie zametki %D 2013 %P 295-309 %V 94 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2013_94_2_a11/ %G ru %F MZM_2013_94_2_a11