H. Sira-Ramfrez

On the control of the underactuated ship: a trajectory planning approach

H. Sira-Ramfrez, 1999, Proceedings of the 38th IEEE Conference on Decision and Control (Cat. No.99CH36304).

Dynamical Variable Structure Control of a Helicopter in Vertical Flight

Shaheen Ahmad, Mohamed Zribi, Hebertt Sira-Ramfrez, 1992, 1992 American Control Conference.