Limit Cycles in Planar Piecewise Linear Hamiltonian Systems with Three Zones Without Equilibrium Points. - Alexander Fernandes da Fonseca; Jaume Llibre; Luis Fernando Mello (Int. J. Bifurc. Chaos, 2020)

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)