PROOF OF A THEOREM OF A. N. KOLMOGOROV ON THE INVARIANCE OF QUASI-PERIODIC MOTIONS UNDER SMALL PERTURBATIONS OF THE HAMILTONIAN
- 16 October 1963
- journal article
- Published by Steklov Mathematical Institute in Russian Mathematical Surveys
- Vol. 18 (5) , 9-36
- https://doi.org/10.1070/rm1963v018n05abeh004130