%0 Journal Article %A I. Lukach %T Complete sets of observables on the sphere in four-dimensional Euclidean space %J Teoretičeskaâ i matematičeskaâ fizika %D 1977 %P 275-282 %V 31 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1977_31_2_a15/ %G ru %F TMF_1977_31_2_a15