@article{TMF_1987_71_1_a5,
     author = {A. N. Leznov and M. A. Mukhtarov},
     title = {Internal symmetry algebra of exactly integrable dynamical systems in the quantum domain},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {46--53},
     publisher = {mathdoc},
     volume = {71},
     number = {1},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1987_71_1_a5/}
}