1. Proof of a theorem by A. N. Kolmogorov on the invariance of quasiperiodic motions under small perturbations of the Hamiltonian;Arnold;Uspekhi Mat. Nauk,1963
2. PROOF OF A THEOREM OF A. N. KOLMOGOROV ON THE INVARIANCE OF QUASI-PERIODIC MOTIONS UNDER SMALL PERTURBATIONS OF THE HAMILTONIAN
3. Mathematical Methods of Classical Mechanics;Arnold,1980
4. Problèmes ergodiques de la mécanique classique;Arnold,1967
5. Unfoldings of quasi-periodic tori;Broer,1990