@article{TMF_1977_31_2_a15,
     author = {I. Lukach},
     title = {Complete sets of observables on the sphere in four-dimensional {Euclidean} space},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {275--282},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1977_31_2_a15/}
}