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| 1. | Birkhoff normalization, bifurcations of Hamiltonian systems and the Deprits formula
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JOURNAL OF FIXED POINT THEORY AND APPLICATIONS Tom 13 Nr 2 r. 2013, str. ISSN 1661-7738 / 587-618 (Artykuł) Weronika Barwicz, Mateusz Wiliński, Henryk Żoł±dek | |