@article{DE_2004_40_5_a6,
     author = {A. G. Petrov},
     title = {Asymptotic {Methods} for {Solving} the {Hamilton} {Equations} with the {Use} of a {Parametrization} of {Canonical} {Transformations}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {626--638},
     publisher = {mathdoc},
     volume = {40},
     number = {5},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2004_40_5_a6/}
}