@article{DAN_1969_184_4_a10,
     author = {A. I. Oksak},
     title = {The normal form of operators in a {Fock} space},
     journal = {Doklady Akademii Nauk},
     pages = {803--806},
     publisher = {mathdoc},
     volume = {184},
     number = {4},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_184_4_a10/}
}