On the limit cycles of a class of piecewise linear differential systems in R4 with two zones. - C. A. Buzzi; Jaume Llibre; Joao C. Medrado (Math. Comput. Simul., 2011)

Piecewise linear differential systems with two real saddles. - Joan C. Artés; Jaume Llibre; Joao C. Medrado; Marco Antonio Teixeira (Math. Comput. Simul., 2014)

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)

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)