The normal form of a system, close to a Hamiltonian system
Matematičeskie zametki, Tome 48 (1990) no. 5, pp. 35-46
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@article{MZM_1990_48_5_a3,
author = {A. D. Bruno},
title = {The normal form of a~system, close to {a~Hamiltonian} system},
journal = {Matemati\v{c}eskie zametki},
pages = {35--46},
year = {1990},
volume = {48},
number = {5},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_5_a3/}
}
A. D. Bruno. The normal form of a system, close to a Hamiltonian system. Matematičeskie zametki, Tome 48 (1990) no. 5, pp. 35-46. http://geodesic.mathdoc.fr/item/MZM_1990_48_5_a3/