@conference {90,
	title = {A Hybrid Feedback Controller for Robust Global Trajectory Tracking of Quadrotor-like Vehicles with Minimized Attitude Error},
	booktitle = {Proceedings of the 2014 IEEE International Conference on Robotics and Automation},
	series = {NULL},
	year = {2014},
	month = {June},
	pages = {6272--6277},
	keywords = {attitude control},
	author = {P. Casau and R. G. Sanfelice and R. Cunha and D. Cabecinhas and C. Silvestre}
}
