New trends for Hamiltonian systems and celestial mechanics : Mexico, 13-17 September 1994. : 2nd international symposium on Hamiltonian systems and celestial mechanics : Sep 1994, Cocoyoc, Mexico.
Selected papers."Papers ... of the Second International Symposium on Hamiltonian Systems and Celestial Mechanics, which was held in Cocoyoc, Morelos, ...
"Papers ... of the Second International Symposium on Hamiltonian Systems and Celestial Mechanics, which was held in Cocoyoc, Morelos, México, from September 13-17, 1994" -- pref.