@book{67426,
	author = {Artés Ortuño, Manuel. and Guillen Estany, Montserrat.},
	title = {Variables exógenas cualitativas /},
	publisher = {UOC Papers,},
	year = {2002.},
	address = {[Barcelona] :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/5763/}
}