@conference {skarpetis2006robust,
	title = {Robust Tracking for Time-Varying Uncertain Systems with Application to 4WS Vehicles},
	booktitle = {IECON 2006-32nd Annual Conference on IEEE Industrial Electronics},
	year = {2006},
	pages = {4689{\textendash}4694},
	publisher = {IEEE},
	organization = {IEEE},
	author = {Skarpetis, Michael G and Fotis N. Koumboulis and Ntellis, Achilleas S}
}
