Separatrix surfaces and invariant manifolds of a class of integrable Hamiltonian systems and their perturbations /
Jaume Llibre, Ana Nunes.
- 1 online resource (206 pages) : illustrations.
- Memoirs of the American Mathematical Society, Number 513 0065-9266 ; .
- Memoirs of the American Mathematical Society ; Number 513. .
"January 1994, Volume 107, Number 513 (second of 4 numbers)."