@conference {107,
	title = {Global Exponential Stabilization on the $n$-Dimensional Sphere},
	booktitle = {Proceedings of the American Control Conference},
	series = {NULL},
	year = {2015},
	month = {June},
	pages = {3218--3223},
	keywords = {attitude control, hybrid systems},
	author = {P. Casau and C. G. Mayhew and R. G. Sanfelice and C. Silvestre}
}
@conference {101,
	title = {A Hybrid Controller for Global Uniform Exponential Stabilization of Linear Systems with Singular Input Constraints},
	booktitle = {Proceedings of the Conference on Decision and Control},
	series = {NULL},
	year = {2014},
	month = {December},
	pages = {741--746},
	keywords = {attitude control, hybrid systems},
	author = {P. Casau and R. G. Sanfelice and C. Silvestre}
}
