@book{132472,
	author = {Gu, Ning, and Maher, Mary Lou,},
	title = {Designing adaptive virtual worlds /},
	publisher = {De Gruyter Open,},
	year = {2014.},
	address = {Warsaw, [Poland] ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=11054993}
}