@article{TMF_1971_9_3_a6,
     author = {A. B. Nikolov},
     title = {On a~complete set of commuting operators for ladder representations of the {Lie} algebra of
},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {365--379},
     publisher = {mathdoc},
     volume = {9},
     number = {3},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1971_9_3_a6/}
}