@conference {TocCDC05,
	title = {Stabilization of a Class of Planar Nonlinear Systems},
	booktitle = {44th IEEE CDC-ECC{\textquoteright}05},
	year = {2005},
	month = {December},
	address = {Seville, Spain},
	keywords = {Robotics},
	author = {F. Tocchini and L. Greco and M. Innocenti}
}
@conference {GreMED04,
	title = {Stabilization of a Class of Unstable Switching Systems},
	booktitle = {12th IEEE Mediterranean Conference},
	year = {2004},
	month = {June},
	address = {Kusadasi, Turkey},
	keywords = {Robotics},
	author = {L. Greco and F. Tocchini and M. Innocenti}
}
