@article{MZM_1988_44_5_a2,
     author = {V. L. Vereshchagin},
     title = {Hamiltonian structure of averaged difference systems},
     journal = {Matemati\v{c}eskie zametki},
     pages = {584--595},
     publisher = {mathdoc},
     volume = {44},
     number = {5},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1988_44_5_a2/}
}