%0 Journal Article %A P. Bäcklund %T Families of Equivariant Differential Operators and Anti-de Sitter Spaces %J Journal of Lie Theory %D 2009 %P 149-183 %V 19 %N 1 %U http://geodesic.mathdoc.fr/item/JOLT_2009_19_1_a6/ %F JOLT_2009_19_1_a6