Limit cycles of continuous and discontinuous piecewise-linear differential systems in R3. - Bruno Rodrigues de Freitas; Jaume Llibre; Joao C. Medrado (J. Comput. Appl. Math., 2018)

Birth of Isolated Nested Cylinders and Limit Cycles in 3D Piecewise Smooth Vector Fields with Symmetry. - Tiago de Carvalho; Bruno Rodrigues de Freitas (Int. J. Bifurc. Chaos, 2020)

Three Crossing Limit Cycles in a 3D-Filippov System Having a T-Singularity. - Rony Cristiano; Bruno Rodrigues de Freitas; Joao C. Medrado (Int. J. Bifurc. Chaos, 2022)

The local behavior around switching planes in a mathematical model to chemoimmunotherapy. - Tiago de Carvalho; Bruno Rodrigues de Freitas (Commun. Nonlinear Sci. Numer. Simul., 2023)

On the Limit Cycles Bifurcating from the Periodic Orbits of a Hamiltonian System. - Gerardo H. Anacona; Jaume Llibre; Bruno Rodrigues de Freitas (Int. J. Bifurc. Chaos, 2025)