@book{50213,
	author = {De Bruijn, Mirjam. and Langaa groupe d'intiative commune en recherche et publication.},
	title = {Mobile phones},
	publisher = {Langaa Research & Pub. Common Initiative Group,},
	year = {2009.},
	series = {Langaa & African Studies Centre},
	address = {Cameroon :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10333783}
}