Russmann Helmut

Publications in Math-Net.Ru

1. Addendum to "Invariant tori in non-degenerate nearly integrable Hamiltonian systems", RCD 6(2) 2001
   
   Regul. Chaotic Dyn., 10:1 (2005),  21–31
2. Invariant Tori in Non-Degenerate Nearly Integrable Hamiltonian Systems
   
   Regul. Chaotic Dyn., 6:2 (2001),  119–204