Carletti Timoteo and Villari Gabriele: Existence of limit cycles for some generalisation of the Liénard equations : the relativistic and the prescribed curvature cases. (2020)
Hayashi Makoto and Villari Gabriele and Zanolin Fabio: On the uniqueness of limit cycle for certain Liénard systems without symmetry. (2018)
Hayashi Makoto and Villari Gabriele and Zanolin Fabio: On the uniqueness of limit cycle for certain Liénard systems without symmetry. (2018)