Fonte:
http://www.dre.pt/pdf2sdip/2008/06/117000000/2677426774.pdf
http://www.dre.pt/pdf1sdip/2008/06/11800/0354003542.PDF
http://www.dre.pt/pdf1sdip/2008/06/11800/0354203611.PDF
http://www.dre.pt/pdf1sdip/2008/06/11800/0361103613.PDF