@conference {SIEEUM5370,
	title = {A 3D-gis extensionf for sky view factors assessment in urban environment},
	journal = {8th International Conference on Computers in Urban Planning and Urban Management},
	year = {2003},
	month = {2003-01-01 00:00:00},
	address = {Sendai Japan},
	keywords = {3D-GIS extension, Sky view factor, Urban canyon geometry},
	url = {http://sieeum.eng.uminho.pt/publicacoes/pub.aspx?pubid=5370},
	author = {Souza, C. L. L{\'e}a and Rodrigues, D. S. and Mendes, J. F. G.}
}