Llibre, Jaume; Valls, Clàudia. «Non-existence and uniqueness of limit cycles in a class of generalized Liénard equations». Boletin de la Sociedad Matematica Mexicana, Vol. 28, Issue 2 (July 2022), art. 41. DOI 10.1007/s40590-022-00433-8 <https://ddd.uab.cat/record/274777> [Consulta: 12 abril 2025].

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