@inbook {SIEEUM7210,
	title = {A new air quality index for cities},
	booktitle = {Advanced Air Pollution},
	volume = {1/1},
	number = {1},
	year = {2011},
	month = {2011-01-01 00:00:00},
	pages = {455{\textendash}472},
	publisher = {InTech - Open Access Publisher},
	organization = {InTech - Open Access Publisher},
	keywords = {Air Quality, Urban pollution},
	isbn = {ISBN 978-953-307-511-2},
	url = {http://sieeum.eng.uminho.pt/publicacoes/pub.aspx?pubid=7210},
	author = {Silva, L. T. and Mendes, J. F. G.}
}