%0 Journal Article %A Arnaud, M.-C. %T Three results on the regularity of the curves that are invariant by an exact symplectic twist map %J Publications Mathématiques de l'IHÉS %D 2009 %P 1-17 %V 109 %I Springer-Verlag %U http://www.numdam.org/articles/10.1007/s10240-009-0017-8/ %R 10.1007/s10240-009-0017-8 %G en %F PMIHES_2009__109__1_0