Global Phase Portraits for a Planar ℤ2-Equivariant Kukles Systems of Degree 3. - Fabio Scalco Dias; Ronisio Moises Ribeiro; Cláudia Valls (Int. J. Bifurc. Chaos, 2020)

Global Phase Portraits for the Kukles Systems of Degree 3 with ℤ2-Reversible Symmetries. - Fabio Scalco Dias; Ronisio Moises Ribeiro; Cláudia Valls (Int. J. Bifurc. Chaos, 2021)

Limit Cycles Bifurcating from a Periodic Annulus in Discontinuous Planar Piecewise Linear Hamiltonian Differential System with Three Zones. - Claudio Gomes Pessoa; Ronisio Moises Ribeiro (Int. J. Bifurc. Chaos, 2022)

Crossing Limit Cycles Bifurcating from Two or Three Period Annuli in Discontinuous Planar Piecewise Linear Hamiltonian Differential Systems with Three Zones. - Denis de Carvalho Braga; Alexander Fernandes da Fonseca; Luis Fernando Mello; Ronisio Moises Ribeiro; Claudio Gomes Pessoa (Int. J. Bifurc. Chaos, 2023)