Qualitative analysis of the phase flow of a Manev system in a rotating reference frame. - M. C. Balsas; Juan Luis García Guirao; E. S. Jiménez; Juan Antonio Vera (Int. J. Comput. Math., 2009)

Topology and Periodic orbits of Ring-Shaped Potentials as a Generalized 4-d Isotropic oscillator. - M. C. Balsas; Sebastián Ferrer; E. S. Jiménez; Juan Antonio Vera (Int. J. Bifurc. Chaos, 2010)