A Proposal for Optimal Tuning of Fractional order Proportional Integral-proportional Derivative PIα-PDß Controllers. - Khalfa Bettou; Abdelfatah Charef; Blas M. Vinagre Jara (ETFA, 2009)

Control quality enhancement using fractional PIlambdaDµ controller. - Khalfa Bettou; Abdelfatah Charef (Int. J. Syst. Sci., 2009)

Optimal fractional order PIλDμA controller design for bioreactor control using Particle Swarm Optimization. - Khalfa Bettou; Abdelfateh Charef (ICSC, 2017)

Fractional-Order PI Control of a TITO System Using Particle Swarm Optimization Algorithm. - Khalfa Bettou; Hanane Bekkouche; Mohamed Assabaa (ICSC, 2024)