%0 Journal Article %A Mathilde Kammerer-Colin de Verdière %T Stable products of spheres in the non-linear coupling of oscillators or quasi-periodic motions %J Comptes Rendus. Mathématique %D 2004 %P 625-629 %V 339 %N 9 %I Elsevier %R 10.1016/j.crma.2004.09.017 %G en %F CRMATH_2004__339_9_625_0