Llibre Saló, JaumeOrdóñez Cabrera, Manuel HilarioPonce Núñez, Enrique2016-12-092016-12-092013-10Llibre Saló, J., Ordóñez Cabrera, M.H. y Ponce Núñez, E. (2013). On the existence and uniqueness of limit cycles in planar continuous piecewise linear systems without symmetry. Nonlinear Analysis: Real World Applications, 14 (5), 2002-2012.1468-1218http://hdl.handle.net/11441/49910Some techniques to show the existence and uniqueness of limit cycles, typically stated for smooth vector fields, are extended to continuous piecewise-linear differential systems. New results are obtained for systems with three linearity zones without symmetry and having one equilibrium point in the central region. We also revisit the case of systems with only two linear zones giving shorter proofs of known results.application/pdfengAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Piecewise linear systemsLiénard equationLimit cyclesinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1016/j.nonrwa.2013.02.004