%0 Journal Article %T Large normally hyperbolic cylinders in a priori stable Hamiltonian systems %A Patrick Bernard %J Mathematics %D 2009 %I arXiv %R 10.1007/s00023-010-0040-9 %X We prove the existence of normally hyperbolic invariant cylinders in nearly integrable hamiltonian systems. %U http://arxiv.org/abs/0912.0591v2