Adaptive backstepping control of hydraulic manipulators with friction compensation using LuGre model. - Hairong Zeng; Nariman Sepehri (ACC, 2006)

Design of a tracking controller for cooperating hydraulic manipulators handling a rigid object. - Hairong Zeng; Nariman Sepehri (ACC, 2006)

Dynamic Surface Control of Cooperating Hydraulic Manipulators in the Presence of Friction. - Hairong Zeng; Nariman Sepehri (ACC, 2007)

On tracking control of cooperative hydraulic manipulators. - Hairong Zeng; Nariman Sepehri (Int. J. Control, 2007)