| ||
| 1. | Birkhoff normalization, bifurcations of Hamiltonian systems and the Deprits formula
[ LINK ]
JOURNAL OF FIXED POINT THEORY AND APPLICATIONS Vol. 13 Nr 2 yr. 2013, pp. ISSN 1661-7738 / 587-618 (Article) Weronika Barwicz, Mateusz Wiliński, Henryk Żołądek | |