@conference {ccc17,
	title = {Unknown input observer in descriptor form via LMIs for power-assisted wheelchairs},
	booktitle = {Proceedings 36th Chinese Control Conference (CCC{\textquoteright}17)},
	year = {2017},
	month = {26{\textendash}28 July},
	address = {Dalian, China},
	author = {Guoxi Feng and Thierry-Marie Guerra and Lucian Busoniu and Sami Mohammad}
}
