Fonte:
http://www.dre.pt/pdf1sdip/2008/03/06000/0173701738.PDF
http://www.dre.pt/pdf1sdip/2008/03/06000/0173801740.PDF
http://www.dre.pt/pdf1sdip/2008/03/06000/0174701754.PDF
http://www.dre.pt/pdf1sdip/2008/03/06000/0176501765.PDF