@book{507051,
	author = {Bertoni, M. and et al.},
	title = {Does hearing impairment lead to social exclusion? En: Ageing in Europe. Supporting policies for an inclusive society},
	publisher = {Walter de Gruyter},
	year = {2015},
	address = {Berlín},
	url = {http://www.siis.net/documentos/ficha/507051.pdf}
}