Resumen: In this article, Liénard equations are considered. The limit cycles of these systems are studied by applying the homotopy analysis method (HAM). The amplitude and frequency obtained with this methodology are in good agreement with those calculated by computational methods. This puts in evidence that HAM is a useful tool to solve nonlinear differential equations. Idioma: Inglés DOI: 10.1080/00207160903248659 Año: 2011 Publicado en: International journal of computer mathematics 88, 1 (2011), 121-134 ISSN: 0020-7160 Factor impacto JCR: 0.499 (2011) Categ. JCR: MATHEMATICS, APPLIED rank: 179 / 245 = 0.731 (2011) - Q3 - T3 Tipo y forma: Artículo (PostPrint) Área (Departamento): Área Ciencia Comput.Intelig.Ar (Dpto. Informát.Ingenie.Sistms.)