%0 Journal Article %A J. J. Guadalupe %A V. I. Kolyada %T A transplantation theorem for ultraspherical polynomials at critical index %J Studia Mathematica %D 2001 %P 51-72 %V 147 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm147-1-5/ %R 10.4064/sm147-1-5 %G en %F 10_4064_sm147_1_5