@article{INTM_1984_22_a2,
     author = {V. I. Man'ko},
     title = {Symplectic group and invariants of quantum systems},
     journal = {Itogi nauki i tehniki. Seri\^a, Matemati\v{c}eskij analiz},
     pages = {59--100},
     publisher = {mathdoc},
     volume = {22},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTM_1984_22_a2/}
}