@article{TM_1994_203_a3,
     author = {A. A. Bolibrukh},
     title = {On analytic transformation to {Birkhoff} standard form},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {33--40},
     publisher = {mathdoc},
     volume = {203},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1994_203_a3/}
}