Hamiltonian Oscillators in 1 - 1 - 1 Resonance: Normalization and Integrability. - Sebastián Ferrer; Jesús F. Palacián; Patricia Yanguas (J. Nonlinear Sci., 2000)

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)

Bifurcations of the Hamiltonian Fourfold 1: 1 Resonance with Toroidal Symmetry. - J. Egea; Sebastián Ferrer; J. C. van der Meer (J. Nonlinear Sci., 2011)

The 2-d sextic Hamiltonian oscillator. - F. J. Molero; J. C. van der Meer; Sebastián Ferrer; F. J. Céspedes (Int. J. Bifurc. Chaos, 2013)

Alternative Reduction by Stages of Keplerian Systems. Positive, Negative, and Zero Energy. - Francisco Crespo; Sebastián Ferrer (SIAM J. Appl. Dyn. Syst., 2020)