@conference {SIEEUM5200,
	title = {Tourism development in world heritage urban areas},
	journal = {F{\'o}rum Barcelona 2004 - Turismo, Diversidad Cultural y Desarrollo Sostenible},
	year = {2004},
	month = {2004-01-01 00:00:00},
	address = {Barcelona Spain},
	keywords = {Local development, Ouro Preto-Brazil, Porto-Portugal, Sustainable development, Tourism, World Heritage},
	url = {http://sieeum.eng.uminho.pt/publicacoes/pub.aspx?pubid=5200},
	author = {Louren{\c c}o, J. M. and Alvares, D.}
}