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Perturbation method in the theory of nonlinear oscillations Ahmed Aly Kamel OriginalPaper Pages: 90 - 106
Expansions of the negative powers of mutual distances between bodies M. S. Petrovskaya OriginalPaper Pages: 121 - 128
Normalisation des systèmes linéaires canoniques et application au problème restreint des trois corps Jacques RoelsGeorges Louterman OriginalPaper Pages: 129 - 140