@article {156,
	title = {A hybrid feedback control strategy for autonomous waypoint transitioning and loitering of unmanned aerial vehicles},
	journal = {Nonlinear Analysis: Hybrid Systems},
	volume = {26},
	year = {2017},
	month = {November},
	pages = {115-136},
	author = {D. W. Smith and R. G. Sanfelice}
}
