%0 Journal Article %A A. S. Libin %T Trace formulae for the Laplace operator on the two-dimensional sphere and on the groupĀ $SU(2)$ %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1970 %V 25 %N 6 %U http://geodesic.mathdoc.fr/item/RM_1970_25_6_a11/ %G ru %F RM_1970_25_6_a11