Fonte:
http://dre.pt/pdf1sdip/2011/05/09800/0282302826.pdf
http://dre.pt/pdf1sdip/2011/05/09800/0282602827.pdf
http://dre.pt/pdf1sdip/2011/05/09800/0282702828.pdf
http://dre.pt/pdf1sdip/2011/05/09800/0282802857.pdf
