Jacques Henrard (auth.)

{PDF} Periodic Orbits, Stability and Resonances: Proceedings of a Symposium Conducted by the University of S?o Paulo, the Technical Institute of Aeronautics of S?o Jos? Dos Campos, and the National Observatory of Rio De Janeiro, at the University of S?o Paulo, S?o Paulo, Brasil, 4?12 September, 1969 Andr? Deprit, Jacques Henrard (auth.), G. E. O. Giacaglia (eds.)