Bifurcation of limit cycles from a 4-dimensional center in 1: n resonance. - Jaume Llibre; Amar Makhlouf (Appl. Math. Comput., 2009)

Periodic orbits of the fourth-order non-autonomous differential equation iu'''' + qu'' + pu = εF(t, u, u', u'', u'''). - Jaume Llibre; Amar Makhlouf (Appl. Math. Comput., 2012)

Limit Cycles for the Class of D-Dimensional Polynomial Differential Systems. - Zouhair Diab; Amar Makhlouf (J. Appl. Math., 2016)

Limit Cycles of a Class of Perturbed Differential Systems via the First-Order Averaging Method. - Amor Menaceur; Salah Mahmoud Boulaaras; Amar Makhlouf; Karthikeyan Rajagopal; Mohamed Abdalla (Complex., 2021)