%0 Journal Article %A N. A. Gromov %T Casimir operators of groups of motions of spaces of constant curvature %J Teoretičeskaâ i matematičeskaâ fizika %D 1981 %P 210-218 %V 49 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1981_49_2_a6/ %G ru %F TMF_1981_49_2_a6