%0 Journal Article %A Ivan Kachuryk %A Anatoliy Klimyk %T Eigenfunction Expansions of Functions Describing Systems with Symmetries %J Symmetry, integrability and geometry: methods and applications %D 2007 %V 3 %U http://geodesic.mathdoc.fr/item/SIGMA_2007_3_a54/ %G en %F SIGMA_2007_3_a54