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Figure Captions
Fig.1(a-b) The figures (a) and (b) was obtained using the linearized
and non-linearized Hamiltonian respectively with the same parameter set.
Fig. 2 Poincaré surfaces for section
and 0.30 (from left to right and top to bottom).In all cases the used parameters
are : K=1 and
The sections are in the
defined.