@inbook{chiuso1998,
	author="A. Chiuso and G. Picci",
	title="The Confluence of Vision and Control",
	year="1998",
	pages="90--105",
	volume="237",
	chapter="Visual Tracking of Points as Estimation on the Unit Sphere",
	publisher="Springer-Verlag",
	note="Springer-Verlag Lecture Notes in Control and Information Systems"
}