@article{DE_1987_23_2_a13,
     author = {B. Yu. Sternin and V. E. Shatalov},
     title = {On asymptotic solutions of differential equations in the case of finite motions of a {Hamiltonian} field},
     journal = {Differencialʹnye uravneni\^a},
     pages = {300--308},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1987_23_2_a13/}
}