A note on a modified version of the Poincare-Birkhoff theorem - NOVA Math

A note on a modified version of the Poincare-Birkhoff theorem

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Analysis

Article
Campos,J;Margheri,A;Martins,R;Rebelo,C
JOURNAL OF DIFFERENTIAL EQUATIONS

2004
203
1
55-63
10.1016/j.jde.2004.03.022