Gevrey properties of real planar singularly perturbed systems

De Maesschalck, Peter

Comptes Rendus. Mathématique, Volume 340 (2005) p. 195-198

Time and entry–exit relation near a planar turning point

De Maesschalck, Peter; Dumortier, Freddy

Comptes Rendus. Mathématique, Volume 339 (2004) p. 359-364