Robustness of stability regions of nonlinear circuits and systems under parameter variation. - Fabíolo Moraes Amaral; Luís F. C. Alberto (ISCAS, 2010)

Type-Zero saddle-Node bifurcations and stability Region Estimation of nonlinear Autonomous Dynamical Systems. - Fabíolo Moraes Amaral; Luís F. C. Alberto (Int. J. Bifurc. Chaos, 2012)

Supercritical Hopf equilibrium points on the boundary of the stability region. - Josaphat R. R. Gouveia Jr.; Luís Fernando Costa Alberto; Fabíolo Moraes Amaral (CDC, 2013)

Stability boundary Characterization of nonlinear Autonomous Dynamical Systems in the Presence of a supercritical Hopf equilibrium Point. - Josaphat R. R. Gouveia Jr.; Fabíolo Moraes Amaral; Luís F. C. Alberto (Int. J. Bifurc. Chaos, 2013)

Toward a Comprehensive Theory for Stability Regions of a Class of Nonlinear Discrete Dynamical Systems. - Elaine Santos Dias; Luís Fernando Costa Alberto; Fabíolo Moraes Amaral; Hsiao-Dong Chiang (IEEE Trans. Autom. Control., 2021)