%0 Journal Article %A Carlitz, L. %T The product of two ultraspherical polynomials %J Glasgow mathematical journal %D 1961 %P 76-79 %V 5 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S204061850003433X/ %R 10.1017/S204061850003433X %F 10_1017_S204061850003433X