Limit cycles of discontinuous piecewise linear systems separated by a non-regular line and formed by an arbitrary linear system and a linear system without equilibrium points. Nonlinear Studies, [S. l.], v. 33, n. 1, p. 73–82, 2026. Disponível em: https://nonlinearstudies.com/index.php/nonlinear/article/view/3761. Acesso em: 28 feb. 2026.