Fonte:
http://www.dre.pt/pdf1sdip/2008/02/03800/0117401180.PDF
http://www.dre.pt/pdf1sdip/2008/02/03900/0120501210.PDF
http://www.dre.pt/pdf1sdip/2008/02/03900/0121001211.PDF
http://www.dre.pt/pdf1sdip/2008/02/04000/0126101288.PDF