@inbook{inbook7280687e,
title   = {A symplectic mapping approach for the study of stochasticity in three dimensional asteroidal resonances},
author = {Roig, F. and Ferraz-Mello, Sylvio},
year = {1999},
publisher = {Kluwer},
journal   = {The dynamics of small bodies in the solar system : a major key to solar system studies}
}