Fonte:
http://www.dre.pt/pdf1sdip/2008/11/22600/0813508135.PDFhttp://www.dre.pt/pdf1sdip/2008/11/22600/0813508177.PDFhttp://www.dre.pt/pdf1sdip/2008/11/22600/0817708185.PDFhttp://www.dre.pt/pdf1sdip/2008/11/22600/0818508216.PDF