Yokoyama, T.Balthazar, José Manoel [UNESP]2014-05-202014-05-201992-01-01Iau Symposia. Dordrecht: Kluwer Academic Publ, n. 152, p. 159-166, 1992.0074-1809http://hdl.handle.net/11449/38116Wisdom's perturbative method is applied to the 5:2 and 7:3 resonances. Some comparisons with Yoshikawa's model are performed: for values of eccentricity up to about 0.3-0.4, agreement exists and it is better for 5:2 resonance. A clear difference between the cases 5:2 and 7:3 is observed : the former one, like in the case 3:1, can show significant variations of eccentricity, even starting from very small values, close to zero, while the latter seems to undergo such variations, but with initial eccentricity not less than a value near 0.1.159-166engArtigoWOS:A1992JJ25200022WOS:A1992BW26V00022Acesso aberto5483476857978177