Periodic solutions for a class of Duffing differential equations
Feddaoui, Amina, Llibre, Jaume, Makhlouf, Amar
On the limit cycles for a class of eighth-order differential equations
Berrehail, Chems Eddine, Bouslah, Zineb, Makhlouf, Amar
A Family of Periodic Orbits in the Liénard Differential Systems
Diab, Zouhair, Guirao, Juan L. G., Makhlouf, Amar, Chen, Huatao