@inbook {SIEEUM5052,
	title = {Enhancing 3Dskyview extension performance: a multi-observer determination of Sky View Factors},
	booktitle = {Recent Advances in Design Support Systems in Architecture and Urban Planning},
	year = {2004},
	month = {2004-01-01 00:00:00},
	pages = {325{\textendash}340},
	publisher = {Kluwer Academic Publishers},
	organization = {Kluwer Academic Publishers},
	address = {Dordrecht},
	keywords = {GIS extension, Sky view factor, Urban geometry, Urban heat island},
	isbn = {1-4020-2408-8},
	url = {http://sieeum.eng.uminho.pt/publicacoes/pub.aspx?pubid=5052},
	author = {Souza, C. L. L{\'e}a and Rodrigues, D. S. and Mendes, J. F. G.}
}