@JournalArticle {SIEEUM12871,
	title = {Indoor radon: an overview on a perennial problem},
	journal = {Building and Environment},
	volume = {58},
	year = {2012},
	month = {2012-01-01 00:00:00},
	pages = {270{\textendash}277},
	publisher = {Elsevier},
	address = {United Kingdom},
	keywords = {Energy efficiency building refurbishment, Radon, Radon-proof membrane, Soil depressurization},
	issn = {0360-1323},
	url = {http://sieeum.eng.uminho.pt/publicacoes/pub.aspx?pubid=12871},
	author = {Pacheco-Torgal, F.}
}