@techreport{JohanBos1999-40,
	title		= "Survey of existing interactive systems",
	author		= "Johan Bos and Staffan Larsson and Peter Ljunglöf and Ian Lewin and Colin Matheson and David Milward",
	year		= "1999",
	url		= "http://www.ling.gu.se/projekt/trindi/publications.html",
}