@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} }